A warmer climate creates an atmosphere that can collect, retain, and drop more water, changing weather patterns in such a way that wet areas become wetter and dry areas drier. Higher temperatures are worsening many types of disasters, including storms, heat waves, floods, and droughts. This warming is altering the earth's climate system, including its land, atmosphere, oceans, and ice, in far-reaching ways. Evidence shows that 2000 to 2009 was hotter than any other decade in at least the past 1,300 years.
The carbon dioxide, methane, soot, and other pollutants we release into the atmosphere act like a blanket, trapping the sun's heat and causing the planet to warm. But for the world in which we live, which climate experts project will be at least eight degrees warmer by 2100 should global emissions continue on their current path, this small rise will have grave consequences, ones that are already becoming apparent, for every ecosystem and living thing-including us.Īccording to the National Climate Assessment, human influences are the number one cause of global warming, especially the carbon pollution we cause by burning fossil fuels and the pollution-capturing we prevent by destroying forests. It may not sound like much-perhaps the difference between wearing a sweater and not wearing one on an early-spring day.
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