Scientists are looking at the ways humans change the planet — and the impact that has on the spread of infectious disease. You might be surprised at some of their conclusions.
At Bear Divide, just outside Los Angeles, you can see a rare spectacle of nature. This is one of the only places in the western United States where you can see bird migration during daylight hours.
Afuá, a remote town in the Brazilian Amazon, banned motor vehicles over 20 years ago. Writer Mac Margolis and photographer Stefan Kolumban paid the town a visit to see what life is like.
The government has declared May 10 a day of mourning to mark the deaths from disastrous floods and pledged to help. But some say the authorities aren't doing enough. And the rains keep falling.
The debris from Lahaina's fire contains toxic chemicals and sits right next to a coral reef. So the community is collaborating with scientists to track water quality.