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February's issue of Scientific American features a beautiful close-up image of a placenta taken by Norm Barker, associate professor of pathology and art as applied to medicine at the Johns Hopkins University School of Medicine. Barker specializes in photo-microscopy and natural science photography, and his work appears in the permanent collections of more than 40 museums, including the Smithsonian, the American Museum of Natural History and the Science Museum in London.

A Johns Hopkins University professor was one of a trio of scientists awarded the 2011 Nobel Prize in physics Tuesday for discovering that the universe is expanding at a faster and faster rate, contrary to science's conventional wisdom.

Rory McIlroy is ready for a break.

The longest par 70 in major championship history. Water on half of the holes.

Darren Clarke left the PGA Championship much differently than his last major tournament.

After being assured he could do no additional damage, Rory McIlroy played Friday in the second round of the PGA Championship with a heavily taped right wrist.

Former PGA winner Shaun Micheel is back in contention for a second Wanamaker Trophy after shooting a 4-under 66 in Thursday's opening round.

JOHNS CREEK, Georgia (AP) -Bubba Watson says a runner-up finish in last year's PGA Championship and two wins on the tour this year have helped him appreciate how difficult it is to win.

JOHNS CREEK, Georgia (AP) -Lee Westwood is trying to win a major with a new approach. He's not going to try so hard.