Radley Horton, a Columbia University climate scientist, discusses the dire new assessment of the state of the climate and its impact on the United States.

By combining GPS, signal strength and atmospheric pressure — using the barometer that many smartphones now contain — Columbia researchers created an app called Sensory that's able to identify how high up a caller is in a building.

Research led by Columbia's Alessio Rovere and Maureen Raymo found that with only modest sea-level rise, coastal barriers could be more vulnerable to erosion by waves — even if storms do not grow more intense.

Gerald Navratil, a Columbia University Professor of Physics, explains the magic of nuclear fusion energy, "the ultimate energy source in the universe."

Thanks to climate change, insect populations are on the move, found a study by Corey Lesk, a researcher at the Columbia University Center for Climate Systems Research.

Research led by Columbia scientists underscores the lesson that as seas rise once again in our future, they will be able to unleash even more of the ocean’s destructive power upon present-day human structures.

Klaus Jacob, a research scientist at Columbia University, says that while New York City has done a lot to prepare for the next flood, a long-term vision is still needed.