Science & Technology

Science and technology news

A large space rock came fairly close to Earth on Sunday night. Astronomers knew it wasn't going to hit Earth, thanks in part to a new tool NASA is developing for detecting potentially dangerous asteroids.

Whenever you surf the web, sophisticated algorithms are tracking where you go, comparing you with millions of other people. They're trying to predict what you'll do next: Apply for a credit card? Book a family vacation?

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Matt O'Hayer thought he was in the idyllic part of the egg business. He's CEO of Vital Farms, based in Austin, Texas, which markets eggs from hens that run around outdoors, on grassy pastures, at about a hundred different farms.

"I thought that there's nothing more beautiful than eggs, where you have sort of a symbiotic relationship; you take care of the hen and she gives you this little gift every day," says O'Hayer.

Until a few years ago, he never thought about where those hens come from, or what happened to their male siblings.

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