Dramatic video released by the U.S. Geological Survey on Tuesday shows just how fast the lava dome that has been growing inside Mount St. Helens crater has been growing.

Gondolas are running aground and hotel docks hang in midair as Italy's lagoon city Venice, more commonly awash at high tide, dries out because of good weather and an unusual combination of planetary influences.

Villagers in India are in a state of shock and local officials baffled after a fireball was seen crashing Tuesday night, causing a massive explosion that "shook the Earth."

We are all seeing rather less of the Sun, according to scientists who have been looking at five decades of sunlight measurements.

Grass has become established in Antarctica for the first time, showing the continent is warming to temperatures unseen for 10,000 years.