Electronic cigarettes are a popular choice for those seeking to quit smoking and clearly, there are many people who do wish to leave this costly habit behind. According to the Centers for Disease Control and Prevention, in 2014, around 17 out of every 100 adults in the United States smoked cigarettes, amounting to around 40 million smokers in total. Until the advent of e-cigarettes, most people wishing to quit opted for either behavioral therapy or nicotine patches/gum, which helps gradually reduce the amount of nicotine a smoker needs, until they no longer need to smoke at all. Of course, quitting is quite a challenge for most smokers, because sometimes, nicotine is not the problem; rather, the psychological dependency on cigarettes means that therapy can be useful when it comes to channelling stress in a positive manner.
E-cigarettes (battery powered devices that heat nicotine and other flavors to deliver a vapor which is inhaled) held new promise when they appeared on the market a few years back. Those seeking to quit are attracted by the possibility of purchasing low-nicotine refills for their e-cigs. The idea is to gradually purchase less and less nicotine until one is not smoking at all. Some quitters immediately replace nicotine with herbal or flavoured fillers (which boast attracted flavours such as strawberry cheesecake, peppermint or chocolate).
Research has now shown, however, that e-cigarettes are not actually helping smokers quit. Researchers at the University of California – San Francisco conducted a systemic review and meta analysis of existing research, finding that adults who ‘vape’ (i.e. use electronic cigarettes) are actually 28 per cent less likely to quit than those who do not use them. The researchers therefore recommended that those who are serious about quitting not turn to e-cigarettes, until there is evidence that this product can actually help them kick the habit. They came to their conclusions after reviewing 38 studies assessing the link between e-cigarettes and smoking cessation. Their research accounted for many variables, including the level of addiction, demographics and previous attempts to quit. They noted that e-cigarette vaping may be less dangerous than puffing on conventional cigarettes, but they will not help smokers quit.
The researchers noted that one important issue which needed to be addressed was the freedom with which e-cigarettes could be purchased and used. If the government were to include this product in smoke-free laws and voluntary smoke-free policies, it could decrease their reputation for being a smoking cessation aid.
Other researchers have also expressed their doubts regarding the safety of electronic cigarettes. According to a review published in Contemporary Reviews in Cardiovascular Medicine, the health risks posed by e-cigarettes may be greater than originally thought. First of all, ‘vaping’ brings more nicotine directly into the bloodstream than nicotine patches. Secondly, e-cigarettes have been proven to bring the same unacceptably high levels of microscopic particles into the lungs as tobacco cigarettes, and they also bring a heavier load of toxic metals (such as lead, tin and chromium) into the lungs than conventional cigarettes do. Finally, many e-cigarette products are made in China, where a lack of control means that different brands can deliver nicotine at different levels. Therefore, experts suggest that those who wish to quit stick to tried-and-tested methods such as nicotine patches, which deliver less nicotine in reliable amounts.
Research also shows that exercises aimed at strengthening self-control, such as mindfulness meditation, can also help smokers control their desires. Neuro-imaging studies show that smokers have less activity in the parts of the brain associated with self-control. Therefore, scientists postulate that targeting these neurobiological circuits might be a more successful way to curb addiction. One study in particular showed that 10 meditation sessions (lasting half an hour per session) resulted in a 60 per cent reduction in smoking for over two weeks after the study period. The authors of the study noted that participants altered their smoking behaviour without actually being aware of it. Other research has shown that integrative mind-body control sessions led to reduced levels of stress hormone, cortisol. The findings are vital because stress is linked to a higher relapse rate. Additional studies have shown changes in the brain (greater connections between regions linked to self-control) after body-mind training.
Closely encounter a semi-liquid cowpat and you and your wet shoe know all about it. So just imagine emerging from a frolic in the surf, slicked in the warm, crustacean-based slurry that is whale feces. Why? Because afterwards you’ll feel incredibly happy that hasn’t happened to you yet. Also, because it will turn your thoughts toward whale waste, a substance that has done you more favors than you know.
https://www.youtube.com/watch?v=jil6Z3pQDP4
The boring reality is you are extremely unlikely to ever physically connect with whale poo. That’s because it’s runny, which means it disperses quickly once released, and because it’s typically released far offshore. It is in fact whale poo’s liquidity and tendency to spread apart as it rises to the ocean’s surface and its richness in iron that make it so important to ocean ecosystems and to you.
Iron-poor Oceans and Anaemic Phytoplankton
Iron, you may not know, is in short supply in some of the world’s oceans, including the enormous Antarctica-encircling Southern Ocean, and this has big consequences for the tiny floating sea plants called phytoplankton that live in them. Where sea iron levels are too low phytoplankton just can’t grow. And this means they’re not around to photosynthesize, which their worldwide population has traditionally done on a larger scale than all the planet’s rainforests put together!
Phytoplankton: The Greatest Photosynthesizers
Naturally, when less carbon dioxide is being absorbed from the atmosphere by little green specs in the sea, more of it is hanging around and helping things heat up, in a global warming kind of way. So, it’s in the interest of most organisms on Earth for phytoplankton to be plentiful. And it’s only within the last few years that scientists have discovered that iron-rich whale poo plays a huge role in feeding phytoplankton.
Whale Waste as Phytoplankton Fertilizer
Of course, the iron in whale feces has to come from somewhere, and that somewhere is very often krill. During the feeding season in the Southern Ocean, adult blue whales eat up to two tons of krill every day, and most of the iron they consume in doing so gets released in slurry-faeces-form near the ocean’s surface. That same slurry rises right to the top—where iron-hungry phytoplankton like to grow.
So, to recap: more whale poo in the Southern Ocean means more phytoplankton, more removal of carbon dioxide from the air and importantly, less warming of the globe. Unfortunately, much less whale poo is what’s out there now, due to the large decline in whale numbers. Fixing this situation will require stopping whale hunting and restoring whale populations, so their poo can keep providing a critical ecological service to microscopic sea algae and innumerable other living things, including you.
The Chernobyl meltdown and explosion is by far the worst nuclear disaster the world has ever seen. If you’re over 30, you’ve heard of the famous soviet disaster of Chernobyl. If you haven’t, here is a recap.
On April 26th, 1986 about about 1:23 am, reactor #4 overheated and exploded. That released a radioactive cloud that ended up killing three people immediately and several thousand directly from radiation. The exact number is still a bit of a debate. It also caused untold troubles for much of Europe. The meltdown created a fear of nuclear power that still exists today, but many of the more interesting and integral facts have not been widely publicized. Here are ten things (broken up into two videos) I find really interesting.
1 – Sweden actually sent the first alert
You have to remember 1986 was still during the cold war. The Soviet Union didn’t tell the west what was happening right when it happened. In fact, it took them days to tell their own people to evacuate nearby areas. After the explosion, the first westerners to know were Swedish Nuclear plant workers whose sensor’s read high levels of radiation. Sweden sent out the first alert that something was happening. It wasn’t until the world pointed their satellites towards what is now northern Ukraine, that we realized what had happened.
2 – Radioactive Iodine is the first Killer
After the blast, the real killers come in the form of radioactive isotopes- transmitted by dust particles floating in the air and falling to the ground. Radioactive iodine is one of the most dangerous because it can quickly be accumulated in the thyroid gland, leading to thyroid cancer and death.
If you have enough natural iodine stored in your thyroid, then radioactive iodine won’t accumulate. But if people are starved of natural iodine (like those who live in areas of iodine poor soils) they are particularly at risk . This is why relief efforts begin by giving iodine pills to people in affected areas – trying to prevent accumulation of radioactive iodine in their bodies. Fortunately Iodine-131 has a half-life of only 8 days, so the threat does not pose a long-term problem.
3 – Strontium-90 and Cesium-137 are the long term killers
Probably the most serious threat is cesium-137 and strontium-90. They have half lives of 30 and 28 years respectively. The real threat with these two is in their ingestion. Strontium-90 follows calcium chemistry, so that it is readily incorporated into the bones and teeth – particularly of young children who have received milk from cows consuming contaminated forage. Cesium-137 parallels potassium chemistry, so it is readily taken into the blood and may be incorporated into tissues of people and animals. All of this causes serious health issues and death at various rates.
The relatively long half-life of both these isotopes still makes them a huge problem today. Only about half of the radioactive material has decayed right now, hence an exclusion zone for safety.
4 – Radiation in Chernobyl is relative
Radiation comes in many forms. In science, radiation falls on a spectrum of electromagnetic radiation. Long wavelengths are things like radio waves. Light is somewhere in the middle. Small lengths like alpha, beta and gamma rays are emitted from radioactive isotopes. They can penetrate your cells and destroy your DNA. Of course, these rays exist all around us all the time. It’s the amount that is the issue.
Surprisingly, even very close to the main reactor, your levels of radiation can be very low. In fact, standing in the parking lot looking at the melted down reactor gave us dosimeter readings similar to flying high in an airplane over the poles. For a whole video just about the relative nature of radiation, I suggest this video.
5 – Nobody lives in Chernobyl
There are lots of people that live in Chernobyl at different times. The ghost town that you see in most pictures is the feeder city of Pripyat. In theory, nobody lives there anymore. However, the town of Chernobyl, which is just over 10km from the reactor, has residents that cycle in and out on regular intervals. Also, in the Life After: Chernobyl documentary that we did, we found more people that live “unofficially” in the area – like this 90 year old guy.
6 – You can still die from radiation in Chernobyl
If you already knew that radiation wasn’t too bad in Chernobyl, you might think it’s not bad. Truth be told, there are some pretty hot spots. These hot spots are usually found in cracks in and around Pripyat where the radioactive particles accumulated. They’re also in areas of the red forest where a lot of the main fallout happened as was buried. On three occasions, my geiger counter went off the charts. Essentially, our safety personnel told me that I could probably stand about 4 hours laying in that spot before succumbing to the dangerous radiation and then slowly dying because of it. It was more time than I thought it would take, but it’s nothing to mess around with.
7 – The animals are radioactive but doing well
This is a relative statement – obviously. The radiation causes odd growths and birth defects in the animals there. We as humans wouldn’t stand for even a 1% rate of abnormality in our own species. Yet, for the animals here, this seems a small price to pay for living a place that is relatively free of humans. The sad the truth is that the human presence is probably the biggest problem for most animals to survive.
8 – The Wormwood star prophesy
In the book of revelations, an angel predicted a giant star, a ‘wormwood’ star would bring on doomsday (more or less, that’s the gist). Well, guess what the name for the wormwood plant is in this region – it’s none other than “chernobyl” , whose namesake later became the name of the town that fed the power plant. Seem ominous. Yes, it is. Finding the wormwood plants there were one of my main goals.
9 – You can actually visit Chernobyl
While we were the first crew with Animal Planet to be given access to this wide array of the exclusion zone to study and film within, you can actually visit it as a tourist or go as a scientist. I didn’t pass any American tourists, but there were one or two van-loads of Polish visitors coming to see it. Clearly there are ways to see it if you want to be adventurous. From my experience, I’d highly recommend it. It will open your eyes to even more truths about nuclear energy. Just be careful. I don’t think the guides generally let you know about the potential dangers. Remember, radiation is a silent, odorless, tasteless, invisible killer that kills you down the road.
10 – Chernobyl is an amazing experiment
It’s hard for most people to see any silver lining in a nuclear disaster. However, while you’d never be able to subject animals or humans to these levels of radiation in a designed experiment, you can study the effects of the animals here and compare them to those outside the zone. This was a large part of the topics we discussed in the Chernobyl documentary. I won’t spoil it all though. Go check it out and see some of what we did.
11 – The Radioactive Wolves of Chernobyl is a Myth
I had to add one more to my list. I spent two weeks in the zone working with wolf biologist Dr. Maryna Shkvyria. She was so helpful in making the end documentary a success. Much of her research dealt with wolves that attack people. She found over a dozen instances of attacks on humans, but almost all of them were tied to cases of rabies. We never mentioned it in our doc, and so I felt the need to make a follow up here, just for Maryna, if nothing else.
The conclusion: The wolves in Chernobyl are not more dangerous because of radiation!
Find More Fun Facts about Chernobyl
If you want to find out more, I suggest buying the book about the natural history of Chernobyl. The Wormwood Forest was my favorite book. Also, watch the documentary that I co-hosted with Mary Ann Ochota premiering tonight at 10pm EST on Animal Planet.
We live on a vast and ever-changing wonderball! To celebrate our favorite planet (Earth, obvi), here is a collection of five Earth Day-inspired videos to brighten your day and encourage you to think: How can I help protect our world?
1. Science of Glowing Mushrooms
In a Singapore rainforest, Jonas and Louise search for bioluminescent mushrooms. What makes them glow? We understand the exciting chemistry here, but the benefit for mushrooms to glow in the dark is still largely a mystery. This video is from the series Tropical Molecules produced by Molecular Frontiers and Untamed Science, in collaboration with Nanyang Technological University.
2. Follow the Frog
Who gets the green frog seal? The what now? Let me explain. Only farms that meet rigorous sustainability criteria earn the right to claim the Rainforest Alliance Certified seal. The criteria address the three pillars of sustainability—environmental protection, social equity, and economic viability— and farms are evaluated by independent, third-party auditors. Learn more about Rainforest Alliance Certification and its impacts here.
3. The History of Earth Day
Did you know that Earth Day is the largest secular holiday in the world? It’s true. But have you ever thought about the significant history of this day. Knowing a bit about how it all started will help you put it in perspective this April 22.
4. Why Protect the Amazon?
At Untamed Science, we’re biologists at heart. We make videos that ask “Why protect large wild animals?” or “Why save the planet?” and “Why conserve water?” But we also tackle the question, “Why should we care?” Is it for the sake of natural beauty? Or economic value? In this short about the Amazon, we explore what we think is the most important reason to care: it represents the last stand of something truly wild. What do you think?
5. Natural Phenomena
Finally, here is just some gorgeous imagery. Shots like this never get old, and you could spend your whole life in awe of moments like this all over our planet. Enjoy.
More Earth Day Videos
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Ice cream may seem like just a simple treat that kids and adults alike can enjoy, but did you know there are some pretty serious science principles behind it? To unlock the mysteries of how these principles work, we’ll run an experiment where we make our very own ice cream. All you need is a few simple ingredients and some muscle (hey, you need to work off those ice cream calories anyways, right?). Then sit back and enjoy your treat, and we’ll go over how you just exploited the laws of physics to create your sweet concoction.
Materials
Mittens or gloves
2 quart-sized plastic zip bags
2 gallon-sized plastic zip bags
Ice cubes (about enough to fill up one gallon-sized bag)
2 cups half and half
1 cup rock salt (also sold as “ice cream salt”)
1 teaspoon vanilla extract
4 tablespoons sugar
Thermometer
Procedure
To make this a proper experiment, we’re going to run two tests: an experimental trial and a control trial. This lets us see the effect of leaving out just one ingredient – salt. If you have a friend working with you, you can do both trials at once, otherwise do the experimental trial first.
Follow the instructions below:
1. In one quart-sized bag, add the following three ingredients:
1 cup half-and-half
½ teaspoon vanilla
2 tablespoons sugar
2. Leave a small amount of air in the quart-sized bag, and zip it shut. Roll it around in your hands a bit to mix the ingredients together.
3. In one gallon-sized bag, add enough ice cubes to fill it up about halfway. Add ½ cup rock salt – this is the experimental trial.
4. Place the sealed quart-sized bag in the gallon-sized bag of ice. Leave a small amount of air in the gallon-sized bag, and then zip this bag shut as well.
5. Put on your mittens or gloves (ice is cold!). Roll, knead, and agitate the bag for about 5 minutes. Stop and check the consistency of the cream mixture: is it getting thicker? Seal the bag back up again and re-check the consistency every minute or two until it’s solid. Congratulations, you just made ice cream!
6. Stick the thermometer in the salty ice mixture and record the temperature.
7. Now re-do steps one through 6 with the second set of bags, but this time, don’t add the salt in – just use naked ice cubes for now. This is the control bag, and we’ll use it to see what happens without the salt.
8. After 10 minutes of agitation, if it’s not yet solid, take the temperature again. Is it any different? Go ahead and add the salt in with the ice cubes and continue agitating. If it hasn’t turned solid by now, it’s not going to, and we don’t want the cream to go to waste
Good job! You just made two cups of homemade ice cream. Pull the quart-sized bags out and rinse them off (with cold water of course!). Cut a hole in the corner of the bag, squeeze some ice cream out into a bowl, and let’s review what just happened.
Why do you need salt?
Unless you were using ice cubes pulled from the heart of Antarctica during the depths of winter, you should have noticed that ice alone didn’t freeze the cream mixture unless you added the salt. Why is that?
The answer has to do with a physics concept called the freezing point – the temperature at which a liquid will freeze. For pure water, this happens to be 32°F. Even at this temperature though, if you were to look at it on a molecular level, you’d see something odd: the molecules, despite looking solid at a macro level, are actually moving somewhat in the ice (it is not until absolute zero that molecules cease to move completely). Around 32°F, hydrogen bonds between water molecules in the ice crystal are constantly forming and breaking (thus going from liquid to solid form), even though the majority of the molecules are still bonded together to create a solid piece of ice.
When you add in the salt, there are just enough liquid water molecules to dissolve a few salt molecules. These salt molecules physically get in the way of the water molecules and prevent them from freezing and crystallizing again, just like how you can easily get separated from your friends in a thick crowd. As a result, more and more frozen water molecules convert to liquid water molecules. You saw this in the ice bag when salt was added – there was a lot more water in this bag than the pure ice bag alone.
The net effect of this whole process is that it’s now a lot harder for the water molecules to form the crystal structure of the ice. Instead of freezing at 32°F, the water freezes at a lower temperature, depending on how much salt is added. This is the same reason why road maintenance crews and homeowners spread salt on roads and sidewalks in the winter – it melts the snow and ice, but only down to a certain point (warning: road crews use an inedible type of salt; don’t lick the pavement).
So far we’ve ended up with salty, icy water, but how does it actually get cold? Well, this is due to a phenomena called phase transition. When matter changes states, such as going from solid to liquid or back, energy is required or released. For example, to break the hydrogen bonds in the crystal structure of ice, which happens when ice melts, energy is needed. This energy is taken from the surrounding heat, and that surrounding gets colder! So, the salty ice mixture (where the salt is making the ice melt) literally draws energy in the form of heat out of the cream, making the cream cold enough to freeze and literally form ice cream.
So, the next time you’re white-knuckle driving through a winter storm on salted roads, just think of how those same scientific principles are used to make ice cream waiting for you at home!
Special thanks to chemist Louise Fornander for double checking our science in this experiment.
Today we’re doing a LIVE Google Hangout with Misha Leong, Michelle Trautwein and myself talking to classrooms about the very cool bugs of the world video series that we’re doing! If you managed to click on the link. I’m really glad you’re here! We go live Monday September 21st at 1pm EST. I hope this link works for you. Looking forward to answering any questions you have. If you have a specific question during the broadcast, send me a tweet at @untamedscience.
This august, I went to Sweden to look for the invisible diversity that exists in homes. I wanted to find those arthropods and microbes that we live with, but never see. I joined up with Jonas and Misha to make the third installment of our Bugs in the Home series. Here is what we produced:
Recently, I was asked to make a video about hunting and how it affects conservation. I love this idea because I am a conservationist at heart and a scientist by trade. I also grew up hunting. My whole midwestern family hunts. Here is what has me thinking: how can you make the following statement?
To a hunter, I think this statement makes complete sense. To someone opposed to hunting it makes no sense at all. I think there is truth somewhere in the middle, and if you’re a hunter, I think it’s important to understand what a statement like this really means.
Is Hunting Something Really Conserving it?
First, let’s be clear. If you shoot something, you’re not conserving the thing you just shot. You could conserve the pelt, the antlers, or the memory of that animal, but that animal is gone. However, you might be doing something that helps conserve the species, the habitat, or the region’s biodiversity. This is a big “might.” You can’t just claim to be a hunter and a conservationist unless you understand how you, as a hunter, fit into the greater scheme of conservation.
So let’s step through how hunting can or cannot help in conservation. The first, most logical step is to start with an understanding of conservation in general.
What Does Conservation Mean?
Conservation is defined as the act of preserving, guarding and protecting. When talking about a single animal, hunting doesn’t fit the definition. It’s only in a broader sense—where conservation refers to protecting and preserving biodiversity, the environment and natural resources—does hunting have value. If, through hunting particular species, we are able to protect the vast diversity of animals and plants in an area then maybe hunting is important to conservation.
I think conservation should be focused first on sustaining biodiversity. Hunting has an important role here that I’d like to discuss. However, before we go on, it is important that we all agree on this definition of conservation. If you’d rather agree that conservation simply means the survival of the species you’re hunting, I think our common ground may fall apart. For example, if you’re only interested in what you can do to make sure you keep a population of wild pigs, as opposed to how you can manage wild pigs to keep a healthy ecosystem, I don’t think you can call it conservation.
My Hunting/Conservation Story Disclaimer:
This is an extremely tricky subject to do a video on because the intricacies of hunting and conservation also depend on the region of the world you’re in. They are dependent on local laws, the culture of the people, some history, and the biology of the organisms.
For example, the recent discussions of trophy hunting in African countries bring up a completely different set of issues than those we deal with in the US. Some of those countries have banned hunting (like Kenya) and other countries (like Zimbabwe) seem to have used hunting to fuel great conservation success stories. We don’t have the same problems of poaching, extreme poverty, and hunting for bushmeat. Simply put, you can’t lump hunting around the world together as one concept. Here, I’ll be discussing hunting only in North America.
A Reality Check
What would things be like if nobody hunted? Would everything fall apart? I don’t think it would. Animals and plants would find an equilibrium. They’d probably eat a lot more of our crops, predators would eat our cats, and there may be more animal-borne diseases to deal with, but we’d probably see a lot more animals. Countries like Bhutan, where the population is mostly Buddhist and people don’t hunt, are pretty nice. However, we don’t have that history.
I come from a country where, culturally, some people like to hunt. A lot of people like to shoot things for sport or leisure. In fact, the common hunter is part of why the passenger pigeon (our most beautiful and abundant pigeon) went extinct in 1914. They say flocks of them blackened the sky. Now, they’re gone.
In fact, in the 1800s we lost a lot of species and almost lost many others, like the bison. In that case, hunters were not part of the solution; they were the problem. Fortunately, some American leaders realized what was happening and decided to make sure there were animals left for us all to enjoy (and potentially hunt) in the future. To be clear here, this change was in part because the hunting elite at the time, who lived in big cities, wanted to make sure they could keep hunting. So, when hunters claim that we have what we have now because of “hunters,” it’s important to realize nearly everyone hunted. It took a conservationist hunter to give us what we have today.
Essentially, America had to find a way to conserve things so that we didn’t lose more of our abundant wildlife. The solution was in part what we now call the North American Wildlife Conservation Model.
The North American Wildlife Conservation Model
This model isn’t as much a set of rules as it is guidelines for making decisions. It is articulated officially by organizations such as The Wildlife Society (as seen in this publication). Here are the basic principles:
#1 – Wildlife as a Public Trust
Essentially, no individual owns the wildlife of the land. Instead it’s owned collectively by the public and managed by the national and state governments as a resource for everyone. In other words, if you own land, you don’t own the wildlife on it.
#2 – You Can’t Sell Native Animals
By making it illegal to sell and trade North American wildlife, this ensures that a market is not created that might otherwise reduce numbers of native species. This includes wild game meat, bird feathers and native species in the pet trade. It’s why hunters don’t sell their deer meat.
#3 – Allocation of Wildlife By Law / not Free Market
In other words, animals are protected and managed by governmental laws, not by market principles, public status (elites), or land ownership. Laws that regulate access to wildlife include the Marine Mammal Protection Act of 1972 and the 1973 Endangered Species Protection Act.
#4 – Hunting Opportunity for All
Every citizen has an opportunity, under the law, to hunt and fish in the United States and Canada. This makes sure we don’t get a ruling class that decides it’s going to have the exclusive right to hunt. It’s also in part why in-state hunting tags are so cheap.
#5 – Wildlife Use Must Have Purpose
This means we should not kill wildlife for frivolous purposes. Every reasonable effort should be made to use all aspects of the wildlife, including food and fur. This principle essentially shuns trophy hunting just for the horns, heads or skins.
6 – International Resources
Because birds and other game migrate across international boundaries, several international treaties have established that wildlife is an international resource as well. Thus, the management of these species is regulated by cooperation of management agencies across borders as well as through international treaties.
#7 – Scientific Management
Wildlife should be managed via sound science. Basically, it’s important to study and understand the population dynamics, behavior, and habitats of wildlife so that decisions come from that research instead of interests solely based in hunting, stocking and culling predators.
In Summary
In short, these seven basic principles act as guidelines for the government to manage fish and wildlife populations at optimum levels for eternity. It also makes sure that decisions are based in science. It also essentially states that part of the goal is that everyone can keep hunting. That means these guidelines include hunting in their definition of conservation.
For conservationists interested exclusively in keeping biodiversity levels high, I think hunting also has a great role as well. Here is how:
What Does Hunting do for Conservation?
Hunting does two main things for conservation. One, it acts as a funding source for state agencies that help conserve habitat. While this money could come from somewhere else, the reality is that in North America, much of it comes from hunting (more on the funding model in a second). Secondly, it helps control prey species (deer, elk, bison) who might otherwise have population explosions due to reduced predator populations (reduced from hunting). Let me touch on the specifics of each of these.
Hunting Funds Conservation
Just over half of the Department of Fish and Wildlife is funded by hunting. For example, here is the breakdown of where funding comes from in Idaho:
Hunters do fund just over half of the Department of Fish and Wildlife. That Department in-turn spends a big % of the budget to directly support hunting activities (working on getting these exact numbers). That means that a lot of the money hunting raises is able to go into basic scientific research of plants and animals (I’m really hoping that hunting raises more money than is spent on it. I’m still looking for these numbers).
Additionally, XX dollars is used every year to buy up new land and protect it with the sole purpose of allowing hunters to hunt on it in the future. The benefit is that these areas are also conserved for the thousands of other species that use the habitat.
To summarize it, here are the main activities that hunting dollars support:
Research on Wildlife
Buying Land for the Refuge System
Wildlife Management Programs
Purchasing Lands Open to Hunters
Hunter Education Programs
Hunting Controls Populations
If you’re a hunter, you’ve probably heard that hunting deer helps keep populations in check. That’s true. We have lost the predators that might keep deer in check naturally, so deer populations have the potential to go out of control. But what does that mean? Why would that even be a problem?
First, herbivores in large numbers can destroy vegetation. In fact, the Nature Conservancy considers an overabundance of deer in the eastern US to the be the greatest threat to the forests – even more than climate change. They selectively eat certain species, changing the dynamics of the forest. They decrease songbird abundance. In fact, they decrease biodiversity across a wide range of taxa.
Secondly, deer and other prey species spread diseases. In particular, they are a major host for Lyme disease, which is causing huge problems in the United States. Ticks feed on the deer and then pass the pathogen to humans. In fact, I did a video about the ecology of Lyme disease here.
Third, too many deer, elk and moose can cause real problems for motorists. In fact, in 2003 there were 1.5 million deer-related collisions, injuring 13,713 people and causing $1.1 billion in vehicle damage.
Some of the Problems
I live in a forested area of NC with 1,200 acres abutting my property. Yet, I have never seen a deer in the 5 years I’ve been here! When a state issues deer tags, they cannot control where you hunt for deer. Because I’m in the outskirts of a large city like Charlotte, my woods are over-hunted. Other areas are under-hunted.
I also live in prime cougar, bear and wolf country, yet have never seen any of these. In fact, the eastern cougar was recently declared extinct. Part of why we need hunting is because we lack predators. I won’t get into predator hunting here; that could warrant an entire series to do it justice.
Finally, if the major funding source for conservation programs comes from hunting, then a decrease in hunting enthusiasm means those very departments are in trouble. In fact, that’s what is happening around the country. Here is a quote from the Arizona Game and Fish Department:
“In some states, the number of hunting and fishing licenses sold has remained stable in recent years. But given the rate of population growth, particularly in Western states, the percentage of people participating in hunting and fishing is actually decreasing. There is no alternative funding system in place to replace the potential lost funds for conservation. If hunting ends, funding for wildlife conservation is in peril.”
It does seem a bit backwards that we should now encourage hunting for the sake of keeping our agencies funded. In the past, almost everyone hunted. We used hunting to fuel conservation so that we could all hunt and enjoy the wildlife. Things are changing, and it seems like the model will adapt and change with it. Let’s just hope wildlife conservation doesn’t suffer because of changing trends.
Hunting Can Equal Conservation
Hunting won’t go away anytime soon. It’s part of what our country was founded on. It’s a great privilege and something humans have done for all of our existence. Our model in North America works so conservation of lands and hunting can coexist. I’m glad we have the opportunity to use hunting to aid conservation efforts.
Hunting in tandem with good science can help conserve all species if done right. It’s fun to think about. If you’re a hunter, it’s good to know where you fit into this great conservation mix. No matter what you love about nature, surely you want to protect it. As a hunter, you can do your part. The great thing is that you can have your cake deer and eat ’em too.
An Example of How Hunting Can Be Conservation
Recently, I went out to a small reserve in southern Georgia to talk about ways to communicate how valuable our wild places really are. While out there discussing we did a half-day quail hunt. From footage on that trip I made this.
Bugs have finally brought Haley and I to the Amazon! Of all the places where new species of arthropods await, the Amazon rainforest is on the top of the list. It’s wild and remote. It’s also hot, humid and a bit of a chore to get to.
I have the opportunity this year to follow around bug people – entomologists from the California Academy of Sciences. Michelle Trautwein invited me to document a global study on the arthropods in people’s homes. I was pretty excited to say the least! Most of my excitement was simply because you can never know all your bugs.
There are roughly 1.5 million species that have been described so far. Of those about 80 percent are arthropods – mostly insects. But here’s the kicker. There are still a lot more arthropods to be discovered. Some people estimate there are from 5 to 10 million more arthropods out there. Spend any time with a seasoned entomologist and they’ll tell you all the undescribed species they have back in the lab, waiting to be worked up.
Now we’re here in the amazon. For those that have never been, it’s worth a visit. This is my second trip so far. On my first one, I made a top ten list. Here is what you might see when you venture into the jungles.
Back to our bugs. We’re here to sample bugs in people’s houses. You’d expect there to be a lot of them right? Well, that’s what we thought too, until we started sampling. We saw big ones, and showy ones, but we didn’t find a ton of diversity. By that, I mean the total number of species. In the US, most houses averaged about 30-100 species in their houses. Here, the number wasn’t much different. Why not? We expect it might have something to do with the way people live.
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