Was Mars once warm enough to support life? Scientists are still unclear about what the climate was like on Mars billions of years ago. However, there are some clues. A form of sulfur from active ...

For a moment, it seemed like a blast from the past: a plume over Mount St. Helens on Tuesday looked like the volcano might be ...

The National Weather Service of Portland issued a response regarding reports of volcanic ash coming from Mount St. Helens on Sept. 16.