The haze over parts of Florida from wildfires may not look dangerous, but it can cause severe reactions in some people. Here's what to watch for.

The "cosmic pinwheel" that astronomers feared could one day shower Earth with lethal gamma rays may not be as dangerous as ...

Recent research suggests wormholes may already have been detected. Could Einstein have been right all along? How these ...

For the first time, scientists have directly measured a weak r-process reaction using a radioactive ion beam, shedding light ...