
Looking at regional differences in PM2.5 concentrations gives us a sense of the changing face of air quality throughout the world.

The climate issue seems to generate a high level of ideologically based politics, emotional rhetoric and political symbolism. It is time to move past symbols to pragmatism and political reality.

Current Master of Science in Sustainability Management student Jocelyn Gan is a programs associate at Building Energy Exchange. In this role, Jocelyn manages the Daylight Hour social media campaign, an annual event that encourages offices to turn off the lights for one hour in day-lit spaces.

In September, Shell Oil abandoned its offshore oil drilling projects in the Alaskan Arctic. Why is Arctic drilling so controversial and what impacts will Shell’s announcement have?
With Warming, Possible Seasonal Deficits from California to Caucasus

The United Nations Climate Change Conference, meeting in Paris from Nov. 30 to Dec. 11, brings together world leaders to craft a new international agreement to keep the average global temperature rise below 2°C by 2100. Here’s what you need to know about it.

As he explained in a recent issue of Columbia Engineering, for Professor Upmanu Lall, “the goal of engineering is to develop solutions to societal problems.” Over three decades a hydrologist, Lall has focused on the societal problems associated with water: from severe water shortages that are expected to occur in one-third of the developing…

Jeff Bowman, a postdoctoral research scientist at the Lamont-Doherty Earth Observatory, is in Antarctica for the field season studying how phytoplankton and bacteria interact. Follow his reports from Palmer Station.

A live-streamed international conference on El Niño takes place on Nov. 17 and 18 at the International Research Institute for Climate and Society.