climate change99
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What Is Ocean Acidification & Why Does It Matter?
Excess carbon dioxide absorbed into the oceans is starting to have profound effects on marine life, from oysters to tiny snails at the base of the food chain. Our scientists explain the changes and what they are learning about ocean acidification in the past.
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World Wildlife Fund, Earth Institute Form New Partnership
The World Wildlife Fund will collaborate with the Earth Institute’s Center for Climate Systems Research to advance adaptation to the impacts of climate change around the globe. The partners will create new ways of generating climate risk information and embedding it into the World Wildlife Fund’s conservation and development planning, policies and practice.
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The Changing Climate of Security
In the November Democratic presidential primary debate, Sen. Bernie Sanders said that the greatest threat to national security was climate change. But is there actually a link between national security and climate change, and if so, what is it?
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Partnering Best Minds in Science & Business to Take on Climate Change
While national governments can set goals for combating climate change, many of the decisions that lead to action will come from business leaders. The new Columbia Center for Climate and Life helps them build from a foundation of science.
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The Human Contribution to the California Drought
“Future extremes are going to occur more and more frequently. In planning, we don’t need to plan for the 2 degree warming that we are aiming for as a globe, we need to plan for the 10 degree increase in a day, or the year when there’s no water.”
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Antarctica’s Ice: the Big Picture
The impacts of climate change are being felt around the world, but the changes in the polar regions have been more pronounced. The world began to take notice to these changes when an ice shelf roughly the size of Rhode Island collapsed into the ocean in 2002.
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Using LiDAR to Shine a Light on Ross Ice Shelf
LiDar (Light Detection and Ranging) is a remote sensing technique that uses light to develop an elevation image of the surface of the Earth. It is sensitive enough to image small items such as seals lying on the ice surface.
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Cities Face Up to the Climate Challenge
Millions of people living in cities around the world already feel the impacts of climate change: Heat waves, flooded streets, landslides and storms. All of these affect important infrastructure such as transportation and water supplies, ports and commerce, public health and people’s daily lives. And it is cities that are at the forefront of the…
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American Geophysical Union 2015: Key Earth Institute Events
Scientists at Columbia University’s Earth Institute will present important findings at the American Geophysical Union fall 2015 meeting, Dec. 14-18–the world’s largest gathering of earth and space scientists.

The first Earth Day in 1970 ignited a movement to stop polluting our planet. Today, our scientists and experts are tackling the most pressing challenges to achieve real-world impact. This Earth Day, join us in our commitment to realizing a just and sustainable future for our planet. Visit our Earth Day website for ideas, resources, and inspiration.
