Climate Change & Global Warming

Thursday, October 1, 2009

  • Climate scientists discuss what they know about global climate change today, and how they know it.

  • Climate scientists explain why they’re sure the primary cause of global climate change today is increasing human emission of greenhouse gases — mainly carbon dioxide.
     

  • Carbon dioxide is everywhere: in the air, rising from cracks in the ocean floor, and in your soda can. Now it's showing up in the news! Find out why carbon dioxide is such a hot topic, and why it's going to be around for a long, long time.