Water Wise: An oil plume at depth, and NOAA vs. the White House

Debate continues over how much oil remains in the Gulf from last April's spill — but one thing we do know, thanks to a new study, is that in addition to the oil visible at the surface, the leaking well produced a subsurface plume of oil 1,100 meters deep.

Carolyn Gramling
Gramling is Web editor and a reporter at EARTH.

Blogging on EARTH: Previously unknown fault responsible for Haiti quake

When disaster struck Haiti in January, scientists thought they knew the culprit. But new research shows an unknown fault may have been behind the deadly earthquake.

Meg Marquardt
Marquardt is an intern at EARTH.

Voices: Volcanic versus anthropogenic carbon dioxide: The missing science

Can the carbon dioxide emitted by volcanoes really be considered "missing science" in the climate change debate, as a 2009 bestselling book claimed? No — the real missing science, geologist Terry Gerlach says, is when popular books don't include the most recent or accurate data to support their claims.

Terry Gerlach

Gerlach is an emeritus geologist at the U.S. Geological Survey, Cascades Volcano Observatory, in Vancouver, Wash.
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