Earth Sciences96
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Tackling an Ice Age Mystery
In a new study in Nature, climate scientist Maureen Raymo and her colleagues show that variations in sunlight interact with Earth’s topography and the size of ice sheets to control Earth’s ice ages on 100,000 year cycles. One important finding: as ice sheets grow bigger, they also become more vulnerable to melting.
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Conservation & Environmental Sustainability – Fall 2013 Courses
The Earth Institute Center for Environmental Sustainability (EICES) at Columbia University provides executive training in environmental sustainability through courses in science, economics and policy. We invite you to join our leading experts and practitioners, strengthen your understanding of human-ecosystem interactions, and become an effective environmental leader and decision-maker.
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A Moon Holiday to Get Away From It All
A national park on the moon? Preposterous? Not if the Apollo Lunar Landing Legacy Act, put forward by Congresswomen Donna Reed (D – Maryland) and Eddie Bernice Johnson (D – Texas) passes. We could very well be on our way to having a national park on the Moon protecting sites of historical value – where…
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‘Highway from Hell’ Fueled Costa Rican Volcano
Finding Could Lead to Improved Eruption Forecasting
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Cicadas Leave Trail of Dead Leaves
As you travel through our region, you may notice stands of trees with branch tips covered in dead leaves. The damage is not from the hot and humid weather, but rather the aftermath of the cicadas.
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Distant Quakes Trigger Tremors at U.S. Waste-Injection Sites, Says Study
Finding Could Help Identify Critically Stressed Faults
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Photo Essay: High Desert, Deep Earth
In the Arabian peninsula nation of Oman, geologists are studying the Hajar mountains–a range containing rocks that have been thrust up from the deep earth. Accessible to humans in only a few places on earth, these kinds of rocks offer clues to the planet’s deep history–and possible ways that natural processes may be harnessed to…
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Ancient Rocks, Modern Purpose
The desert sultanate of Oman is home to some of the weirdest—and possibly most useful—rocks on earth. The stark Hajar mountains, near the border with Saudi Arabia, contain a chunk of earth’s mantle—a zone that makes up most of earth’s mass, but normally lies inaccessible to humans, far below the surface. Here, though, a sliver…
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In Ethiopian Desert, a Window into Rifting of Africa
A new study in the journal Nature provides fresh insight into deep-earth processes driving apart huge sections of the earth’s crust. This rifting mostly takes place on seabeds, but can be seen in a few places on land—nowhere more visibly than in the Afar region of northern Ethiopia.
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