Indian surgeon, Manish Raval (L) infuses stem cells to patient Sampath Kumar who suffers from chronic kidney failure at The Institute of Kidney Disease and Research Centre (IKDRC), Civil Hospital campus in Ahmedabad on February 6, 2013.

After failed attempts, researchers have made stem cells from two adult males.

General view of smog over the City of London as air pollution reaches high levels on April 3, 2014 in London, England.

A study found a correlation between Asian countries' pollution and irregular weather in the Pacific.

A British soldier lifts weights as he passes time at the forward operating base Sterga II on December 16, 2013 in Helmand Province, Afghanistan.

Young men are not getting the help they need because of a perceptions about a "women's illness," say experts.

A Ugandan health official stands inside a newly prepared isolation center at Nyimbwa Health Center, Luweero District, about 70 Kilometers from Kampala on November 15, 2012.

The outbreak has killed over 100 people.

This NASA handout image received on January 2, 2008 shows one of Saturn's moons, Gray Mimas as it appears to hover above the colorful rings of Saturn.

The moon formed from Saturn's rings.