
In general, the more species that live in an area, the healthier that ecosystem is—and the better off we humans are.

Climate scientist Deepti Singh tells the cold truth about the extreme winter weather of the past few weeks.

Columbia University expert weighs in on the potential impacts of the lawsuit.

As the Arctic warms, the unfreezing of permafrost poses a threat to the planet.

Each year, the U.S. spends more than $50 billion trying to attract business headquarters and keep factories open. How much do taxpayers actually benefit from that?

Rainfall changes caused by global warming will increase river flooding risks across the globe by the 2040s, says a new study.

We should be thinking about regulation as a way of ensuring our economic activity can proceed with the least possible amount of unanticipated negative impacts. We need to police ourselves and make sure that the rules of correct behavior are clear, fair, well understood and creatively applied.

New line of information could help predict the storms’ future strength under climate change.

Mendoza’s interest in climate policy piqued after Typhoon Ketsana devastated her hometown in the Philippines. Now she’s a student in Columbia’s Environmental Science and Policy masters program.