This week in science: The world's second-largest diamond is being evaluated; the genetic secrets of a 117-year-old woman are ...

If you're a parent or have a chronic health condition that needs quick or frequent trips to the bathroom, you've probably mapped out the half-decent public toilets in your area.

Images taken of the Universe's most photogenic black hole over time reveal strange and exciting changes in its magnetic field.

Staring at the ceiling while the clock blinks 3am doesn't only sap energy for the next day. A large, long-running US study of older adults has now linked chronic insomnia to changes inside the brain ...