Plankton make up 98 percent of the biomass of ocean life and provide half of the oxygen on the planet. Scientists are working to figure out how climate change may be affecting these important microorganisms. M. Ormestad/Tara Oceans hide caption

itoggle caption M. Ormestad/Tara Oceans

The Emperor's Himalayan lavender tea is popular at Washington, D.C.'s Park Hyatt Tea Room, but please don't put milk in it. Courtesy of Park Hyatt hide caption

itoggle caption Courtesy of Park Hyatt

A prison official examines the damage a day after a powerful earthquake hit the west coast of Indonesia in Banda Aceh on April 12. Adek Berry/AFP/Getty Images hide caption

itoggle caption Adek Berry/AFP/Getty Images

The African spiny mouse has the ability to regrow large patches of skin and hair without scarring. Ashley W. Seifert/Nature hide caption

itoggle caption Ashley W. Seifert/Nature

A mural in an ancient tomb in China shows a troupe of eunuchs. How long did they live? Wikimedia Commons hide caption

itoggle caption Wikimedia Commons

Researchers say that springtime snow is melting in the Arctic even faster than Arctic ice. That means less sunlight is reflected off the surface. Bare land absorbs more solar energy, which can contribute to rising temperatures on Earth. Above, a musher races along the Iditarod in the Alaskan tundra in 2007. Al Grillo/AP hide caption

itoggle caption Al Grillo/AP

Surgeons transplant a kidney in 8-year-old Sarah Dickman at Children's Healthcare of Atlanta in 2008. The proposed changes in the transplant list attempt to maximize kidney life in young patients. John Bazemore/AP hide caption

itoggle caption John Bazemore/AP

The genetic factors responsible for a cat's stripes might help researchers understand disease resistance in humans. kennymatic via Flickr hide caption

itoggle caption kennymatic via Flickr

Italian farmer Giorgio Fidenato picks up what's left of his genetically altered corn after anti-GMO activists trampled it, back in 2010. Paolo Giovannini/AP hide caption

itoggle caption Paolo Giovannini/AP