Had It up to Here with Climate Change? Eat Beans Instead of Beef
A new study shows how one dietary change in the U.S. could make a 46%-plus dent in greenhouse gas reductions.
One of the most effective things Americans can do to curb greenhouse gas emissions is surprisingly simple: eat beans instead of beef.
A recent study showed that if every American made the switch, the U.S. could achieve between 46 and 74 percent of the reductions necessary to meet its emissions goals for 2020 that were pledged by former President Barack Obama. That considered, imagine the difference a reducetarian approach could have too, for those who can't go cold turkey—er, beefy—on their steaks.
“I think there’s genuinely a lack of awareness about how much impact this sort of change can have,” said study author Helen Harwatt to The Atlantic.
Climate change policy in the U.S. focuses mainly on reducing carbon dioxide (CO2) emissions by curbing or modifying energy production and usage. However, climate change is also driven by non-CO2 emissions — namely, methane (CH4) and nitrous oxide (N2O). More than half of these non-CO2 emissions come from livestock farming.
Globally, livestock farming accounts for 15 percent of human-caused greenhouse gas emissions. The effects, however, are disproportionately destructive: methane and nitrous oxide warm the planet significantly more than carbon dioxide.
The massive scale of livestock farming puts the problem into focus. According to the United Nations, one third of Earth’s arable land is used to grow feed for livestock, and in total, about a third of all land on the planet is used to produce animal products.
Feeding cows is also an especially inefficient process. During their lifetimes, cows will consume far more calories from food like beans than they’ll ever yield in meat. Growing that food takes up a lot of land. The study notes that the U.S. could free up 42 percent of its cropland if Americans gave up beef — that's more than the size of California.
Making the dietary switch would be an effective way for individuals to fight climate change without having to rely on lawmakers or private interests.
“The real beauty of this kind of thing is that climate impact doesn’t have to be policy-driven,” said Harwatt. “It can just be a positive, empowering thing for consumers to see that they can make a significant impact by doing something as simple as eating beans instead of beef.”
Obama pledged that U.S. greenhouse gas emissions would be roughly 17 percent lower in 2020 than they were in 2005. Making this dietary shift could be one of the easiest ways to reach that goal.
“Given the scale of greenhouse gas reductions needed to avoid the worst impacts of climate change, are we prepared to eat beef analogs that look and taste like beef, but have a much lower climate impact?” Harwatt asks. “It looks like we'll need to do this. The scale of the reductions in greenhouse gas emissions needed doesn't allow us the luxury of 'business as usual' eating patterns.”
Explore how alcohol affects your brain, from the first sip at the bar to life-long drinking habits.
- Alcohol is the world's most popular drug and has been a part of human culture for at least 9,000 years.
- Alcohol's effects on the brain range from temporarily limiting mental activity to sustained brain damage, depending on levels consumed and frequency of use.
- Understanding how alcohol affects your brain can help you determine what drinking habits are best for you.
If you want to know what makes a Canadian lynx a Canadian lynx a team of DNA sequencers has figured that out.
- A team at UMass Amherst recently sequenced the genome of the Canadian lynx.
- It's part of a project intending to sequence the genome of every vertebrate in the world.
- Conservationists interested in the Canadian lynx have a new tool to work with.
If you want to know what makes a Canadian lynx a Canadian lynx, I can now—as of this month—point you directly to the DNA of a Canadian lynx, and say, "That's what makes a lynx a lynx." The genome was sequenced by a team at UMass Amherst, and it's one of 15 animals whose genomes have been sequenced by the Vertebrate Genomes Project, whose stated goal is to sequence the genome of all 66,000 vertebrate species in the world.
Sequencing the genome of a particular species of an animal is important in terms of preserving genetic diversity. Future generations don't necessarily have to worry about our memory of the Canadian Lynx warping the way hearsay warped perception a long time ago.
Artwork: Guillaume le Clerc / Wikimedia Commons
13th-century fantastical depiction of an elephant.
It is easy to see how one can look at 66,000 genomic sequences stored away as being the analogous equivalent of the Svalbard Global Seed Vault. It is a potential tool for future conservationists.
But what are the practicalities of sequencing the genome of a lynx beyond engaging with broad bioethical questions? As the animal's habitat shrinks and Earth warms, the Canadian lynx is demonstrating less genetic diversity. Cross-breeding with bobcats in some portions of the lynx's habitat also represents a challenge to the lynx's genetic makeup. The two themselves are also linked: warming climates could drive Canadian lynxes to cross-breed with bobcats.
John Organ, chief of the U.S. Geological Survey's Cooperative Fish and Wildlife units, said to MassLive that the results of the sequencing "can help us look at land conservation strategies to help maintain lynx on the landscape."
What does DNA have to do with land conservation strategies? Consider the fact that the food found in a landscape, the toxins found in a landscape, or the exposure to drugs can have an impact on genetic activity. That potential change can be transmitted down the generative line. If you know exactly how a lynx's DNA is impacted by something, then the environment they occupy can be fine-tuned to meet the needs of the lynx and any other creature that happens to inhabit that particular portion of the earth.
Given that the Trump administration is considering withdrawing protection for the Canadian lynx, a move that caught scientists by surprise, it is worth having as much information on hand as possible for those who have an interest in preserving the health of this creature—all the way down to the building blocks of a lynx's life.
The exploding popularity of the keto diet puts a less used veggie into the spotlight.
- The cauliflower is a vegetable of choice if you're on the keto diet.
- The plant is low in carbs and can replace potatoes, rice and pasta.
- It can be eaten both raw and cooked for different benefits.
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