Global Warming/Climate Change

Global Warming: Is it happening? Average temperatures have climbed 1.4 ° F around the world since 1880. The rate of warming is increasing—the end of the 20th century was the hottest period in the past 400 years and possibly in several millennia. Average temperatures in Alaska, western Canada, and eastern Russia have risen twice the global average.

Arctic Ice is rapidly disappearing The region may have its first ice free summer by 2040 or earlier.

Montana’s Glacier National Park Only 27 glaciers, versus 150 in 1910.

2,500 scientists in 130 countries, concluded that humans have caused all or most of the current planetary warming.

FYI (not on test) The U.S. was the largest emitter of carbon dioxide emissions until 2006. Today, China is the largest emitter. China is following the Kyoto Protocol guidelines in order to reduce emissions.

Anthropogenic climate change Industrialization, deforestation, and pollution have increased atmospheric concentrations of all greenhouse gases that help trap heat near Earth’s surface. Humans pour carbon dioxide into the atmosphere much faster than plants can absorb it. Natural changes usually occur over many centuries but the recent changes have taken place in less than 100 years.

What will happen? Large scale food and water shortages (desertification) Catastrophic effects on wildlife Sea-levels could rise 7 to 23 inches by the end of the century’s end. (La and Fl are especially at risk) Strong hurricanes, droughts, heat waves, wild fires, etc.

Extinction of many species from disappearing habitat, changing ecosystems, & ocean acidification. Oceans circulation system could be altered causing a mini-ice age.

What can you do? 1.) Use ENERGY STAR light bulbs 2.) Use ENERGY STAR appliances 3.) Seal and insulate your home 4.) Change air-conditioner/heater filter often 5.) Reduce, Reuse, Recycle 6.) Conserve water 7.) Spread the word

8.) Buy smart 9.) Drive smart (roof rack—5%, hard acceleration, idling, use cruise control) 10.) Tune your vehicle 11.) Check your tires 12.) Give your car a break 13.) Renewable fuels

Video Clip: http://player.discoveryeducation.com/index.cfm?guidAssetId=41CA991D-D5E9-4DC7-B3E1-1870CE84648B&blnFromSearch=1&productcode=US