Mars may once have held enough water to fill oceans and form coastlines. The planet’s red dust contains water and likely formed in cold conditions.

Dress warm and cover up as much skin as possible. Also be aware for a change in skin color, to either white or red. An extreme cold warning is in effect across North Texas until 9 a.m. Thursday.

A groundbreaking study, financed in part by NASA, reveals the mystery behind Mars' iconic red color, linking it to the presence of water-rich iron mineral ferrihydrite, suggesting a cooler, wetter, ...