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Mark Fischetti, senior editor at Scientific American, joins us to discuss the top climate change stories each year.

It's a mystery how butterflies manage to make their brilliant wing colors, but Yale physicists got a glimpse when they took the question to the lab, breeding dull brown butterflies into purple ones.

The Jan. 6 committee is wrapping up its summer series of made-for-TV hearings Thursday night. Here's a look back at all the bombshell details and the major revelations it's shared so far.

Nearly 11,000 more were injured. The toll includes four Americans who died at a Mount Everest base camp. In addition to food, the U.N. says medical supplies are desperately needed.

The world is fortunate to have many dedicated professionals dedicated to combating the coronavirus. Here are portraits of three women from far corners of the globe who are playing a key role.

TikTok's CEO plans to tell the committee that it is working to protect U.S. users' data from Chinese government scrutiny. TikTok is pouring millions into lobbying to ease national security worries.

TikTok's CEO plans to tell the committee that it is working to protect U.S. users' data from Chinese government scrutiny. TikTok is pouring millions into lobbying to ease national security worries.

The convention kicks off Monday. Will it be as exciting as Donald Trump has promised or will it be ... traditional?

When Erica Werner sings to her singing parrot, the term "songbirds" takes on a whole new meaning.

This year artists working within the orbit of the unstable category "roots music" got personal even as they explored complex cultural lineages and challenged the rules of established scenes and forms.