Two atypical cases of mad cow disease detected in Brazil

Two atypical cases of mad cow disease have been detected in Brazil, resulting in suspension of its exports of beef to China, the Agriculture Ministry said Saturday.

Do tourist boats stress out whales? Researchers find out

Just off the northern coast of Iceland, scientists are collecting data from whales' breath to find out if they get stressed by whale-watching boats, an industry that has boomed in recent years.

Conservation meet mulls plan to protect 80% of Amazon

Should 80 percent of the Amazon be declared a protected area by 2025?

After six months on Mars, NASA's tiny copter is still flying high

It was only supposed to fly five times. And yet NASA's helicopter on Mars, Ingenuity, has completed 12 flights and it isn't ready to retire.

Wildfires, smoke snuff out outdoor adventures across US

Andy Farquhar's plans for an outdoor adventure have gone up in smoke twice this summer.