Kosmos 482 has been orbiting the Earth for decades. It's still unknown if the craft will fall to Earth intact or burn up upon atmospheric reentry.

The U.S. government is responding to the Ebola outbreak in with travel restrictions. American citizens and permanent residents departing affected countries must fly into one of three U.S. airports.

The Food and Drug Administration aims to evaluate treatments for rare diseases based on plausible evidence that they would work — without requiring a clinical trial first.