Fresh evidence of volcanic activity on Mars is reshaping how scientists think about the planet’s potential to host life, past or present. Instead of a cold, geologically dead world, Mars increasingly ...

Even though the Red Planet's atmosphere is thin, wind is still one of Mars' most relentless sculptors.

Martian winds can have quite an impact. ESA's Mars Express has spotted them whipping up sand grains and acting as a cosmic sandblaster, carving out intriguing grooves near Mars's equator. The ridges, ...