Mud volcanoes are areas where clay rocks are carried from Earth's interior and expelled onto the surface in eruptions that can sometimes include fiery displays.
Meteorologists issue warnings, watches and advisories as extreme heat grips Pacific Northwest this weekend, into next week. Triple-digit highs expected.
This image is from June 2021. It shows barren hillsides and dry trees in a national forest, during the California drought. Click in for a comparison image from 2020.
Krill in the Southern Ocean are projected to decline about 30% this century, due to human-driven climate change. But natural variability also plays a role. A new study tries to tease out the difference.
A new computer model suggests Earth's lopsided core growth. That is, the inner core grows faster on one side than the other. Faster cooling on one side of the core helps explain why.