Cutting back on red meat is probably the best place to start, but eating the right types of veggies is important, too.
People forego eating meat for a variety of reasons. Some do it in an attempt to eat healthier meals while others make the shift because they think cows and pigs are simply cuter than they are delicious. Some might even switch over because they think it will help the planet. But what would happen if every single human decided to become a vegetarian? Would we be harming or helping our planet? It turns out, reducing our animal product intake might not be such a terrible place to start.
So, to sum up, cow farts plus the massive amount of grain production needed to feed them is pretty disastrous for both land use and greenhouse gas production. “The caveats to why a vegetarian diet may not be the lowest. There are opportunities [for] using ruminant animals to eat grass on land that isn’t suitable for cultivation of other crops,” he says. “There’s kinds of small niche types of productions systems that are rather atypical in our current agricultural production that could offer situations where significant high quality calories could be produced at a lower impact than growing a field of beans.
“You do need to be careful there, because not all plant foods are health foods,” Willett says. “Coca Cola and Dunkin Donuts are plant-based foods and are obviously bad for human health. But, a plant-based diet should really focus more on fruits, vegetables and whole grains, and for protein sources, legumes and seeds would be much better for human health than the average American diet.”Giving up meat, especially red meat, isn’t a bad start to making your dietary carbon footprint shrink a bit.
“There’s no single factor that captures all of this. Local has value, but not all local is the best sometimes,” Willett says. “Driving a truck in from 100 miles away is relatively local but may have much more adverse environmental impact than bringing some fruits [in from] several hundred miles away by train in large amounts.”
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