Energy

Energy harvested from evaporation can cut by half the amount of water lost to natural evaporation, researchers say.  Water-strapped cities with growing populations and energy needs could benefit most, including greater Phoenix, served by the above reservoir and irrigation system fed by the Colorado River. (Central Arizona Project)

In the first evaluation of evaporation as a renewable energy source, researchers at Columbia University find that U.S. lakes and reservoirs could generate 325 gigawatts of power, nearly 70 percent of what the United States currently produces.
Hybrid Organic Inorganic Perovskites solar cells graphic

A new class of solar cells. Graphic by Nicoletta Barolini.

In a discovery that could have profound implications for future energy policy, Columbia scientists have demonstrated it is possible to manufacture solar cells that are far more efficient than existing silicon energy cells by using a new kind of material, a development that could help reduc

Columbia Great Grad 2016 Bianca Howard

Photo by Roger Wong

Bianca Howard led a pioneering study on energy consumption in New York City that resulted in a popular interactive map aimed at giving urban planners, policy makers and engineers the information they need to find sustainable solutions for the city.
Jason Bordoff. Photo by Eileen Barroso.

Jason Bordoff, a former member of the White House staff and a top energy policy expert, started learning about the industry at an early age.

By Lauren Ghelardini and Hayley Martinez

Michael Levi of the Council on Foreign Relations, Gavin Schmidt of Goddard Institute for Space Studies and Mike Hulme of University of East Anglia at the Hertog Global Strategy Initiative.

As the average local temperature continues to rise, climate change is a major topic on campus this summer. It is the focus of the Hertog Global Strategy Initiative, an annual interdisciplinary program that uses historical analysis to examine problems in world politics.

David Sandalow (above left), an assistant secretary in the Department of Energy, will study a range of issues including U.S.-China energy relations, advanced vehicle technology policy, and clean energy finance.

As part of its commitment to pursuing research on the rapidly changing energy landscape and offering real-world solutions to our most pressing energy challenges, the new Center on Global Energy Policy (CGEP) at Columbia University’s School of International and Public Affairs (SIPA) announc

An illustration of part of Professor Ozgur Sahin’s atomic force microscope, which measures mechanical forces at the molecular level. Seen here is the sharp silicon tip of the device, which scans an object’s surface and bends in response to force.

One of Ozgur Sahin’s first machines was a mechanical adding device made from Legos. He made it when he was 11 and hasn’t stopped making gadgets since.

An image of a nanoscale chip engineered by Peter Kinget's lab. He is attempting to build self-powered sensors that run on tiny bits of ambient solar energy, using so little power that their batteries never need replacing.

It’s relatively simple to build a device capable of detecting wireless signals if you don’t mind making one that consumes lots of power. It’s not so easy to design energy-efficient devices that function as well as the components they replace, or to do it at the nano scale.

Parallel application profiles, such as the ones above, indicate that applications do not consume energy uniformly, motivating the fine-grained energy management techniques to be developed as part of the CAREER project.

Computer Science Assistant Professor Martha Kim has won a National Science Foundation (NSF) CAREER award to develop energy tracking and monitoring techniques to audit and control software energy consumption.

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