PLUS Biden not running, weightlifting is good for women's brains, Beloit police search for convicted child sex offender and Sandra Bullocks's butt may or may not be hers.

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New breast cancer guidelines: screen later, less often. (CNN)

Joe Biden not running for president. (USA Today)

Beloit police search for convicted child sex offender. (My Stateline)

Weightlifting is good for women's brains, study concludes. (NY Times)

Sandra Bullock won't say if she used a 'Butt Double' for a mooning scene in her new movie in interview video and her reason why is great. (ET)