Earth & Sky

“About 40% of Earth’s species are changing where they live by moving themselves up towards the poles and up mountains,” said biologist Camille Parmesan, “and about 60% change the timing of when they do things in spring.”

Walt Meier of the National Snow and Ice Data Center says that “pretty much all sea-ice scientists are in agreement” that the were going to reach a point where we’ll have an ice-free Arctic Ocean. He talks about how soon it might be.

Jon Ranson talks about studying vegetation via satellite, and how carbon relates to climate change, in this 8-minute EarthSky Clear Voices for Science podcast.

Dr. Roni Neff led a study of thousands of newspaper stories about climate change. She said that although scientists have estimated that agricultural activities contribute 30 percent of the greenhouse gases now warming our planet, you wouldn’t know it from reading the newspapers.

Polar research scientist Ginny Catania responds to a Brazilian student’s question, and explains why what happens at the poles can have global impacts.

Environmental economist Scott Barrett talks about the economic and diplomatic challenges of addressing climate change in this century in this 8-minute EarthSky Clear Voices for Science podcast.