Science

Is Facebook fading?
In December of last year Facebook reported having 1.04 billion active users daily. However, it's estimated that about one million teens a year are opting for other forms of social media.
St. Olaf Professor Bob Jacobel is part of a group of scientists across the country looking into the ice sheets of Antarctica to see what we can learn about climate history, and what it might teach us about our own climate future. He talked with MPR's Tom Weber.
The Science Museum of Minnesota will have a new president this spring. Alison Rempel Brown will start in May after a move from San Francisco, where she's been chief of staff at the California Academy of Sciences.
'Everybody Stretches' without gravity: Mark Kelly talks about NASA's twins study
Kelly says his twin brother, Scott Kelly, who just returned to Earth after 340 days in space, was temporarily 2 inches taller. NASA is studying the pair to explore what spaceflight does to the body.