The growth of the zebrafish heart from embryo to adult is tracked using colored cardiac muscle clones, each containing many cellular progeny of a single cardiac muscle cell. Just a handful of cells in the embryo are all that's needed to form the outer layer of pumping heart muscle in an adult zebrafish.

This is the first know camera trap photo of an Amur leopard in China. The first-known camera trap photos of an Amur leopard in China have recently been taken by protected area staff in Hunchun Amur Tiger National Nature Reserve in Jilin Province according to the Wildlife Conservation Society. Coupled with Jilin Province's recent announcement of a survey estimating 8-11 leopards across that northern province, the photographs suggest that leopards may be returning to China.

There are lots of ways to treat a heart attack – CPR, aspirin, clot-busters and more. Now CU medical school researchers have found a new candidate: Intense light.