Fountains from the south vent at Kilauea's summit crater soared 1,300 feet (400 meters) into the air, the U.S. Geological ...

The air on Venus is about 96.5% carbon dioxide, a potent greenhouse gas. All that CO2 leads to a runaway greenhouse effect which has turned Venus into a toxic hellscape. It’s hotter even than the ...

Their huge size is peculiar and has forced scientists to throw out their pet theories on how planetary lava tunnels form.

Update: Episode 34 of the ongoing Halemaʻumaʻu eruption ended abruptly at 7:03 a.m. HST on Oct. 1 after just over 6 hours of ...