Cold sores: Discovery reveals how stress, illness and even sunburn trigger flareups

Discovery of a new law of phase separation

ExoMars discovers new gas and traces water loss on Mars. Sea salt embedded in the dusty surface of Mars and lofted into the planet's atmosphere has led to the discovery of hydrogen chloride. The spacecraft is also providing new information about how Mars is losing its water.

New discovery could pave the way for improved treatments for diabetes