Noctilucent – or night-shining – cloud season starts early in 2013

Night-shining clouds appear early in northern summer, when water molecules are wafted up from the lower atmosphere to mix with "meteor smoke."

World Oceans Day is June 8

Today is World Oceans Day. Wear blue! Commit to simple steps to help protect the ocean, such as picking up beach trash and drinking from reusable water bottles.

Video: Sylvia’s Earle’s plea to protect the ocean

Sylvia Earle says in her new video; "Your world is blue. If you look at it from space, that image alone should have inspired us to think we that, too, are sea creatures."

Down to the twilight zone of the Atlantic Ocean

A team of 23 scientists will be sampling and measuring the water column from the surface to the ocean floor some 4,800 metres down – nearly 3 miles.

Whispering light hears liquids talk

Researchers are developing optomechanical sensors that will help unlock vibrational secrets of chemical and biological samples at the nanoscale.

View from space: Tropical Storm Andrea

Watch a 20-second video of Tropical Storm Andrea from June 4 - June 6, a view from space.

To celebrate World Oceans Day, watch Reef Live from Australia

Reef Live is a streaming video event from Australia, focused on the Great Barrier Reef. It features some of the world's leading experts and divers.

Oldest primate skeleton provides clues to early humans

Oldest known primate skeleton found in China in 2002. While not part of human lineage, this little creature does provide tantalizing clues to our earliest history.

New all-solid sulfur-based battery outperforms lithium-ion technology

Scientists have designed and tested an all-solid lithium-sulfur battery with approximately four times the energy density of conventional lithium-ion technologies.

Managing wild horse and burro populations in a human world

Many find the story of free-ranging horses on U.S. federal lands heart-breaking. Others don't. A new report recommends birth control for wild horse populations.

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