Global Warming: News, Facts, Causes & Effects

Global warming is the term used to describe a gradual increase in the average temperature of the Earth's atmosphere and its oceans, a change that is believed to be permanently changing the Earth’s climate. There is great debate among many people, and sometimes in the news, on whether global warming is real (some call it a hoax). But climate scientists looking at the data and facts agree the planet is warming. While many view the effects of global warming to be more substantial and more rapidly occurring than others do, the scientific consensus on climatic changes related to global warming is that the average temperature of the Earth has risen between 0.4 and 0.8 °C over the past 100 years. The increased volumes of carbon dioxide and other greenhouse gases released by the burning of fossil fuels, land clearing, agriculture, and other human activities, are believed to be the primary sources of the global warming that has occurred over the past 50 years. Scientists from the Intergovernmental Panel on Climate carrying out global warming research have recently predicted that average global temperatures could increase between 1.4 and 5.8 °C by the year 2100. Changes resulting from global warming may include rising sea levels due to the melting of the polar ice caps, as well as an increase in occurrence and severity of storms and other severe weather events.
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Latest Articles

Where in the US Are People Most Worried About Climate Change?
April 20th, 2015
A new set of 56 interactive maps estimates public opinion on climate change across the United States from the national to county level.
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Ocean of Acid Blamed for Earth's 'Great Dying'
UAE limestone
April 9th, 2015
Death by acid was the key killer in Earth's biggest mass extinction, some 251 million years ago.
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'Freak Weather Event' Sets Antarctic Heat Records
April 7th, 2015
A remarkable heat wave warmed Antarctica's northernmost peninsula to slightly above 63 degrees Fahrenheit (17.5 degrees Celsius) two weeks ago — a record high for the normally cold continent.
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2015 Already Setting Heat Records
global temperature
April 17th, 2015
The first three months of 2015 set new global heat records.
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What Are the Most Endangered Rivers in the US?
April 8th, 2015
The nonprofit American Rivers has deemed the Colorado River in the Grand Canyon the most endangered river in America in 2015.
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Western Canada's Glaciers Could Vanish by 2100
Athabasca Glacier
April 6th, 2015
Much of western Canada's glacial ice could disappear by the end of the 21st century.
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Hunting on Land Can't Help a Hungry Polar Bear
polar bear
April 1st, 2015
Even though some polar bears are hunting on land more often in areas hit by shrinking Arctic sea ice, a diet of bird eggs and berries can't sustain these huge animals, a new study finds.
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Land Bridge Linking Americas Rose Earlier Than Thought
The Isthmus of Panama
April 10th, 2015
New geologic evidence suggests the Isthmus of Panama emerged from the sea up to 15 million years ago, millions of years earlier than thought.
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What Record-Breaking Drought Means for California's Future
U.S. drought map for April 22, 2014.
April 8th, 2015
Though California is facing the worst drought on record, the future may not be catastrophic, if the state takes action now.
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2011 Japan Tsunami Unleashed Ozone-Destroying Chemicals
An aerial view of damage to Sukuiso, Japan, a week after the earthquake and subsequent tsunami devastated the area in March, 2011.
April 3rd, 2015
The 2011 Japan tsunami released thousands of tons of ozone-destroying chemicals and greenhouse gases into the air.
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