SAN FRANCISCO - A LAW firm has let slip that Facebook paid $98 million (US$65 million) to settle a suit charging that founder Mark Zuckerberg swiped the idea for the website from former college roommates.

TOKYO - AN ACID produced in the mouth due to gum disease invigorates the virus that can lead to full-blown Aids, a Japanese researcher said on Thursday, billing the finding as a world first.

A group of bacteria causes periodontal disease - a chronic inflammation that erodes bony structure in the gum - posing a threat to the teeth and the entire body, the researcher said.

WASHINGTON - LIKE any young woman in love, Bianca Acevedo has exchanged valentine hearts with her fiance.

But the New York neuroscientist knows better. The source of love is in the head, not the heart.