Rising more than twice the height of Mount Everest, Olympus Mons dominates the landscape of Mars and holds the title of the ...

When massive volcanic eruptions occur, they inject millions of tons of sulfur dioxide into the stratosphere, where it forms sulfate aerosols that scatter incoming solar radiation and result in global ...

The 1815 eruption produced 60 megatons of sulfur, and as a result, average global temperatures dropped by around 3°C (5.4°F).

If the theory is proven correct, the consequences could be enormous, spelling a much more risky, explosive future.

A dormant volcano in Ethiopia erupted after 10,000 years of silence. This event shows how the world's little-known volcanoes ...