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Yahoo makes $1.1 billion deal to buy Tumblr

SAN FRANCISCO--Yahoo's board of directors has approved a $1.1 billion cash acquisition of blogging site Tumblr.

It's the biggest and riskiest deal yet for Yahoo Chief Executive Marissa Mayer, who is trying to make pioneering Internet company ...

Mental illness in youth: a common struggle

WASHINGTON -- Go to a busy street in your community and count the next 25 adolescents who walk, bike, skateboard, stroll or saunter past. Odds are that two of those 25 kids (8.3 percent to be exact) would own up to having experienced 14 or more ...

Dark, massive asteroid to fly by Earth on May 31

LOS ANGELES -- It's 1.7 miles long. Its surface is covered in a sticky black substance similar to the gunk at the bottom of a barbecue. If it impacted Earth it would probably result in global extinction. Good thing it is just making a flyby.

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