I used to think plasma donation was just about sitting in a chair for an hour, maybe earning some extra cash while helping people. Boy, was I wrong. There’s this whole wild process happening inside ...

This is a web edition of GBH Daily, a weekday newsletter bringing you local stories you can trust so you can stay informed ...

Add Yahoo as a preferred source to see more of our stories on Google. A man donates his plasma at the B Positive plasma center in Holmes, Pa., in January. (Hannah Yoon for NBC News) Inside a suburban ...

Solid, liquid and gas: The three basic states of matter we know, but there’s a fourth that’s WAY more common than you might think. This week is all about plasma. * We’re not focusing on the kind you ...

Inside a suburban Philadelphia strip mall, between the Hair Cuttery and a Citizens Bank, a dozen people lay on black ergonomic beds a few feet apart, hooked up through a needle in the crook of their ...