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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NASA Keeping Close Eye on Arctic Climate
Operation IceBridge
September 18th, 2014
Three NASA science missions traveled the Alaskan way in summer 2014, soaring above Arctic sea ice, piloting over permafrost and gliding past mountain glaciers.
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In a Warming World We Can't Keep Depending on the Same Few Crops
crops, rice, climate change
September 11th, 2014
We are in the middle of one of the biggest experiments in human history. At its core is the homogenisation of global food systems, which increasingly must deliver the same products to an expanding population (in all senses) across the world.
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Climate and Civilization Killed Egypt's Animals
Egyptian knife with animal decoration
September 8th, 2014
By looking at images of animals in Egypt's archaeological record, scientists found that most extinctions over the last 6,000 years were linked to periods of big change in terms of climate and human civilization.
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Antarctica Nearing Sea Ice Record High, But Arctic Ice Still Shrinking
Arctic sea ice
September 17th, 2014
For an unprecedented third year in a row, Antarctica's sea ice is poised to smash a new winter record, but Arctic summer sea ice hit its sixth lowest minimum.
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Jellyfish Swarms: Bellwethers of Environmental Change
Jellyfish swarm in the Gulf of Mexico
September 11th, 2014
Human activities are promoting giant jellyfish swarms.
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The Wilderness Act Turns 50
wilderness act, grizzly bears, protections
September 3rd, 2014
In terms of America’s best ideas, wilderness ranks alongside National Parks.
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Antarctic Riddle: How Much Will the South Pole Melt?
Antarctic glacier, global warming, climate change, ice melt
August 25th, 2014
Improved climate models suggests melting in Antarctica will be worse this century than we had realized.
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Climate Change Affects Shark Swimming in Strange Way
A catshark rests in the water.
September 16th, 2014
Sharks might not be able to adapt to acidified ocean water if climate change continues as-is, new research suggests. Exposure to ocean acidification changed sharks' nighttime swimming behavior.
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Southwest Could Face a Megadrought This Century
southwest drought
September 2nd, 2014
The Southwest faces a dry and dusty forecast, with an 80 to 90 percent chance of a decade-long drought striking the region this century.
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