Global Warming

EarthTalk®E - The Environmental MagazineDear EarthTalk: I heard that the Arctic summer sea ice is at its lowest level since we began recording it. What…

EarthTalk®E - The Environmental Magazine Dear EarthTalk: I read that CO2 in our atmosphere is now more than 300 parts per million. Doesn’t this mean that…

Some 20,000 years ago, the Earth wobbled on its axis. That happens periodically. But according to a new scenario, this particular time, that wobble sparked a chain reaction of events that melted glaciers and led to a gradual warming of the planet.

Tiny particles from power plants and fires help create new clouds, which shade the oceans from the sun. This means changes in sea-surface temperatures. And that has profound effects on weather, influencing the time and amount of rainfall in West Africa, and even the number, strength and path of hurricanes.

Peter Gleick is an outspoken proponent of scientific evidence that humans are responsible for climate change. This week, the MacArthur "genius" grant recipient shocked the scientific community by admitting to lying to obtain internal documents from the Heartland Institute, a group skeptical of climate change.