Bill Collins discusses how observations show that the Earth is warming at a rate unprecedented in recent history, and that human-induced changes in atmospheric chemistry are probably the main culprits. He suggests a need for better observations and understanding of the carbon and hydrological cycles. (#13003)
K-12 Educational Standards
Standards for Grade(s): 9-12
Energy in the Earth System
Structure and Composition of the Atmosphere
Visit Teacher's PET to find more programs with K-12 Educational Standards.