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Ten facts about global warming.


  1. 1. The primary greenhouse gas responsible for global warming is carbon dioxide. The U.S. is responsible for 19.91% of the carbon dioxide emissions worldwide.
  2. 2.Since 1990, yearly emissions of carbon dioxide have gone up by about 6 billion metric tons worldwide, which is more than a 20% increase. Almost all of that increase is due to human activities.
  3. 3.Carbon dioxide takes 100 years to disperse in the atmosphere. Even if emissions are stopped today, we will still feel the effects for years to come.

  1. 4.During the 20th century alone, the average surface temperature of the world has increased by 1.2 to 1.4°F.
  2. 5.2000-2009 was the hottest decade on record, with eight of the hottest 10 years having occurred since 2000.
  3. 6.The Arctic Climate Impact Assessment has concluded that in the past 50 years, the average temperatures of Alaska, eastern Russia and western Canada have increased as much as 7°F. This rise is almost twice the global average.
  4. 7.Extreme weather doesn't just mean high temperatures. Global warming is causing more intense rainfall and droughts at the same time across the world.
  5. 8.Sea levels have risen between 4-8 inches worldwide during the last century, and experts predict they could rise as much 2 feet in the next 100 years.
  6. 9.The World Health Organization blames 150,000 deaths per year on the effects of global warming including extreme weather, drought, heat waves, decreased food production and the increased spread of diseases like malaria.
  7. 10.At least 279 species of plants and animals are already responding to global warming, migrating north to escape rising temperatures.