Related topics: global warming

30 years of healing the ozone layer

This week marks the 30th anniversary of the signing of the Montreal Protocol on Substances that Deplete the Ozone Layer. The signing of the Montreal Protocol was a landmark political event. The treaty is the first in the ...

Low-frequency sea sounds ring clear at high altitudes

A new study shows microphones suspended from helium balloons in the stratosphere can detect low-frequency sounds from ocean waves. The new method shows promise for detecting acoustic signals from natural disasters and nuclear ...

Image: Haze on the Saturn horizon

This false-color view from NASA's Cassini spacecraft gazes toward the rings beyond Saturn's sunlit horizon. Along the limb (the planet's edge) at left can be seen a thin, detached haze. This haze vanishes toward the right ...

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