Everyday Earth clouds get their start with a bit of salt or dust. Not so the Red Planet's Arsia Mons Elongated Cloud, computer models suggest.

The first estimate of CTE prevalence across the NFL suggests 75 percent of players may suffer from the neurodegenerative disease.

Beautiful ripples drew Víctor Ortega Jiménez to feeding flamingos. Unraveling their secret could inspire new ways to filter water.

Most comets would have hit Earth with too much speed and at too sharp an angle for life-giving molecules to survive impact, a new study suggests.

New brain-computer interfaces turn attempted speech into words and can speak them in a voice resembling the user’s own.