Your dog tilts its head when you cry, paces when you're stressed, and somehow appears at your side during your worst moments.

Scientists have revealed that immune cells in Alzheimer's brains behave differently from those in brains of people without ...

When you order a coffee, do you ask for it to be "extra hot"? Whether you enjoy tea, coffee or something else, hot drinks are ...

A galaxy billions of light-years across space-time has puzzled scientists since its discovery more than 50 years ago.

Free-floating, planetary-mass objects that are just drifting carefree through the galaxy, untethered and starless, appear to be able to generate their own systems of moons, like a planetary system on ...