Scientists at Scripps Institution of Oceanography in San Diego are unraveling the mechanisms behind the dazzling bioluminescent display of this tube worm.
Comet ISON's two tails are a sign that the comet is drawing closer, and closer, to the sun that binds it in orbit. It'll be closest to the sun on November 28.
Low wind shear and warm ocean temperatures exist in the Pacific now. That's why Haiyan grew into one of the strongest - perhaps the strongest - storm ever recorded.