This is Scientific American's 60-second Science, I'm Julia Rosen.Don't worry about why the chicken crossed the road―the bigger question is whether it'll make it at all.Every year, millions of animals get killed by vehicles in the U.S.But that road risk has dropped because of the COVID pandemic."We're aware of negative impacts on the economy, family relations.I'm sitting in my living room, and I don't see as much of my family as I normally would. You know, so there's a lot of negative impacts.But the positive impacts are becoming more clear.And that could really change the discussion after the pandemic―change some of our assumptions about how much driving we should do if we want to protect nature, wildlife, air quality, climate change, and so forth."Fraser Shilling, co-director of the Road Ecology Center at the University of California, Davis.When officials began issuing stay-at-home orders to slow the spread of COVID-19,Shilling and his colleagues quickly realized they were witnessing a novel experiment: What happens when we all start driving way less?The answer is a lot of things, including fewer accidents and lower greenhouse gas emissions from cars.In their latest report, the researchers found that driving less has also led to a dramatic decrease in roadkills in three states for which they had long-term data: Idaho, Maine and California."It's actually the largest conservation action that the U.S. has ever taken, as far as I'm aware, since creation of the national parks."