Climate change is a complex thing. Small changes in temperature could mean significant changes in climate. Surface and air temperatures affect prevailing winds, evaporation rates, and the amount of moisture that air can hold. Higher temperatures could mean warmer winters and longer growing seasons in northern areas. There's some evidence those extremes are happening already.
Scientists are pretty sure our emissions of greenhouse gases are changing the global climate.
They just don't know how much. It's all a matter of degrees. The EnvironMinute is produced in cooperation with the National Safety Council and made possible by the Teresa and H. John Heinz III Foundation.