One sponge-like material, three different applications

A new sponge-like material that is black, brittle and freeze-dried (just like the ice cream astronauts eat) can pull off some pretty impressive feats. Designed by Northwestern University chemists, it can remove mercury from ...

China launches hourly air quality data index

China has started publishing hourly air-quality information for major cities across the country as the world's top source of greenhouse gas emissions tries to rein in its notorious pollution.

How the N2O greenhouse gas is decomposed

Nitrous oxide (N2O) is a harmful climate gas. Its effect as a greenhouse gas is 300 times stronger than that of carbon dioxide. Nitrous oxide destroys the ozone layer. In industrial agriculture, it is generated on excessively ...

Small volcanic eruptions could be slowing global warming

Small volcanic eruptions might eject more of an atmosphere-cooling gas into Earth's upper atmosphere than previously thought, potentially contributing to the recent slowdown in global warming, according to a new study.

Philippine volcano calming; thousands head home

(AP) -- Thousands of villagers evacuated from near the Philippines' most active volcano headed home Saturday after scientists said the rumbling mountain was showing signs it was calming down.

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