Transcript for Wildlife appearing to thrive during pandemic
With Americans staying home on Earth day, wildlife in unexpected places. A coyote walking in the shadow of the golden gate bridge in San Francisco. One of the remarkable images during the pandemic. Black bears in yellowstone national park roaming freely. The bears are literally just walking down the road to get to where they need to go which is kind of cool to see. Reporter: Scientists say it is a difficult time for all of us. We have been taking habitat from these animals. It might cause a sort of increased awareness of the natural beauty that's right around us. Reporter: In Milan, Italy, before the lockdown. And after. The smog lifting. New Delhi's skyline too before. And after. India's air quality improving dramatically during the time. It's not a surprise, but scientists say it's a stark reminder, the toll of pollution. And tonight, on a nat geo special, our ginger zee with the black bear cubs in northern Minnesota. Oh, do you see that? Look how sweet. Reporter: And robin Roberts with the stories from people all over the world working to save wildlife. Cute little thing, huh? Reporter: Actor and Australia native Chris Hemsworth who met with a group rescuing koalas after the devastating wildfires there. You've got the knack. I think maybe you could be a carer. I've already applied for a Welcome to "Jersey 4
This transcript has been automatically generated and may not be 100% accurate.