Facebook's new community tools help you become a mentor
It's also scrapping fees for nonprofit donations.
FDA approves first Zika test for blood donations
It can detect the virus' RNA in plasma from blood donations.
Facebook wants to simplify blood donor searches in India
Users will be able to sign up as donors and post blood requests.
Mass-produced artificial blood is now a real possibility
It could prove a life-saver for people with rare blood types.
Game controller takes your real blood whenever you lose (update: suspended)
Forget playing games for cash -- if you really want to raise the stakes, try losing your actual bl...