Bioluminescent surf at San Diego beaches in September, 2011

During the last week of September 2011, the coastline of San Diego County had bioluminescent surf that appeared lit from within by tiny sea creatures. See the videos.

Moon’s shadow, like a ship, creates waves in Earth’s atmosphere

During a solar eclipse, the moon's shadow creates waves in Earth's atmosphere, much as a ship moving through the ocean creates waves at its bow and stern.

Deepwater Horizon oil spill damaged fish

A landmark study finds that the Deepwater Horizon oil spill in the Gulf of Mexico created widespread damage to killifish, despite low concentrations of oil in test waters.

No worries for the tropics … for now

The tropics in the Atlantic are forecast to become quiet for the next two weeks. By the middle of October, we might see another surge of tropical development.

Two great videos carry you aboard ISS, flying over planet Earth

These two great videos give the feeling of being aboard the International Space Station, orbiting above our planet's night side.

Killer whales on trial for attacks on humans

Killer whales spark federal hearings and could affect animal welfare, trainer safety and the future of marine parks after a trainer was killed at Seaworld.

Weather extremes and disasters in the summer of 2011’s

Drought and wildfires in Texas, flooding across New England, active Atlantic hurricane season, and snowstorms in the Southern Hemisphere.

Humboldt squid washing up on southern California beaches

High tides brought hundreds of Humboldt squid onto beaches along southern California last week. No one knows for sure why.

Cleveland Volcano: Continued unrest in Alaska

The growing lava dome might precede an explosive eruption in Alaska's Cleveland Volcano, according to the Alaska Volcano Observatory.

Ophelia weakens while Hurricane Hilary blossoms

Tropical Storm Ophelia is weakening in the Atlantic, and Hurricane Hilary is a powerful Category 4 hurricane in the eastern Pacific ocean.