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House Committee on Oversight and Accountability Chairman James Comer said the hearing will examine the value of an impeachment inquiry and evidence against President Biden.

Twitter launches Vine, a video-sharing app that allows users to post succinct videos directly onto tweets. The app is reminiscent of Instagram and seems familiar at a time when animated GIFs are all the rage.

B-360, a nonprofit, uses dirt bikes to teach elementary and high school students math and science. "Just the excitement and the adrenaline. You can learn a lot from a bike," one participant says.

When a disabled young woman moved out of a hospital to her own apartment, the Trump administration celebrated — even though it's ending the federal program that made it possible.

Desks at least six feet apart, kids arriving at different times, eating lunch in the classrooms — the CDC has updated guidelines for re-opening public places, including schools.

There's a move in Congress to name a science laureate. Astronomer Mike Brown hopes that person would do much more than visit schools to encourage kids to consider careers in science. He'd like to see a laureate reach out to the public in all sorts of ways.

Warren Buffett's son, Howard, is using his foundation, stocked with $2 billion of his father's money, to address hunger in the U.S., as well as globally. He's trying to use his farming experience to help farmers be more productive and to get more food into the hands of those who need it most.

NSF fired 168 employees, leaving the agency less equipped to fund a wide range of scientific research.

A Pew Research Center study shows that the two groups disagree most strongly on the safety of GM foods, the use of animals in research, climate change and human evolution.

Surgeon General Vivek Murthy was officially sworn in this week. His confirmation was held up for more than a year because of comments he made about gun violence. Murthy talks with NPR's Scott Simon.