Khan Academy
Khan Academy: Lebron Asks: Why Does Humidity Make It Feel Hotter?
LeBron asks Sal why humidity makes it feel so much hotter.
Science Friday Initiative
Science Friday: Defending Climate Science's Place in the Classroom
The National Center for Science Education helps teachers keep pseudoscience out of the classroom.
California Academy of Sciences
California Academy of Sciences: A Native Voice in Copenhagen
In November 2009, US tribal communities came together to create a declaration to take to the Copenhagen Climate Conference. [2:03]