An unprecedented study of bald eagle diet, from about 20,000 to 30,000 years ago to the present, will provide wildlife managers with unique information for reintroducing Bald Eagles to the Channel Islands off California. The scientists, including researchers from the Carnegie Institution’s Geophysical Laboratory, found that eagles fed mainly on seabirds from about 20,000 to 30,000 years ago to the 1840s and 50s, when humans introduced sheep. See multimedia story.
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The Giant Magellan Telescope Organization (GMTO) Corporation is pleased to announce that the University of Chicago has joined the partnership that will construct the 25-meter Giant Magellan Telescope (GMT), a state of the art astronomical observatory. The GMT will be used to address fundamental questions in cosmology and astrophysics and to explore worlds around other stars.

Analysis of data from MESSENGER’s third and final flyby of Mercury in September 2009 has revealed evidence of younger volcanism on the innermost planet than previously recognized, new information about magnetic substorms, and the first observations of emission from an ionized species in Mercury’s very thin atmosphere or exosphere.

A tiny, little-understood plant pore has enormous implications for weather forecasting, climate change, agriculture, hydrology, and more. A study by scientists at the Department of Global Ecology has now overturned the conventional belief about how these important structures called stomata regulate water vapor loss from the leaf–a process called transpiration. They found that radiation is the driving force of physical processes deep within the leaf.

With carbon dioxide in the atmosphere approaching alarming levels, even halting emissions altogether may not be enough to avert catastrophic climate change. Could scrubbing carbon dioxide from the air be a viable solution? A new study by scientists at the Carnegie Institution suggests that while removing excess carbon dioxide would cool the planet, keeping carbon dioxide at low levels would require a long-term commitment spanning decades or even centuries.

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