A new astronaut photo shows the Carrizozo Malpaís lava flow in New Mexico in stunning detail.
The oldest three-dimensional green algae fossil ever found dates back more than half a billion years and may reveal that plants are older than believed.
The explosive Hunga Tonga-Hunga Ha'apai volcanic event spewed so much moisture that it increased the global average of atmospheric water vapor by 5%.
Hurricane Katrina was the most expensive hurricane in history, while a 1780 storm killed the most people of any hurricane.
An astronaut's photo of Mount Ruapehu, the real-life "Mount Doom" volcano, shows the contrast between the hydrothermal lake at its summit and the snow surrounding its peak.
Tens of thousands of people in Japan have already sought shelter from powerful storm Nanmadol, which could be the most destructive in decades.
Coastal Alaska is recovering after a weekend of brutal flooding caused by the remnants of Typhoon Merbok.
Vast underwater forests grow on the sea bottom; collectively, they cover more area than the entire Indian continent.
An astronaut recently captured a stunning image of a "sunglint" that transformed the sea surrounding two Greek islands into a swirling silver mirror.
A new study that reassesed decades of work of climate "tipping points" has revealed they are more numerous and closer to being triggered than researchers initially feared.
Water driven toward Earth's center by plate tectonics could lead to the creation of diamonds at the boundary between the core and the mantle.
A new study has revealed that the Thwaites glacier, also known as the "Doomsday Glacier," could melt away much faster than previously believed.