Skip to main content

At least half of climate change man made, report says

By CNN Staff
updated 4:59 AM EDT, Fri September 27, 2013
Activists gather outside the the United Nation's Intergovernmental Panel on Climate Change on September 27, 2013 in Stockholm.
Activists gather outside the the United Nation's Intergovernmental Panel on Climate Change on September 27, 2013 in Stockholm.

(CNN) -- A United Nations climate change report published Friday concludes that it is "extremely likely" that human activity accounts for at least half of the global warming that has been observed since the 1950s.

The Assessment Report from the Intergovernmental Panel on Climate Change is the benchmark study on global warming published every few years. Nearly 1,000 researchers from around the world work on the document, which then undergoes review by about as many scientists.

This year's report further strengthens the suspicions scientists have already ascertained.

READ: Climate change report: "extremely likely" humans are responsible

ADVERTISEMENT
Part of complete coverage on
updated 9:02 PM EDT, Mon October 20, 2014
A 15-year-old pregnant girl is rescued from slavery, only to be charged with having sex outside of marriage, shocked rights activists say -- a charge potentially punishable by death.
updated 12:07 PM EDT, Mon October 20, 2014
Airports judged on comfort, conveniences, cleanliness and customer service.
updated 9:19 AM EDT, Mon October 20, 2014
With so many new attractions on the way, the next few years are going to be a roller coaster ride.
updated 12:29 AM EDT, Thu October 16, 2014
Thomas Malthus famously predicted that rising populations would create a food crunch: Could this be true?
updated 5:45 AM EDT, Tue October 21, 2014
The lives of everyone close to Oscar Pistorius and the girl he killed are changed forever, his siblings say.
updated 6:33 AM EDT, Sat October 18, 2014
From "Sick Man of Europe" to the world's fourth largest economy.
updated 9:31 AM EDT, Tue October 21, 2014
Each day, CNN brings you an image capturing a moment to remember, defining the present in our changing world.
updated 7:27 PM EDT, Wed October 15, 2014
Serbia and Albania try to play but the major game is called off after a drone flying a political flag enters the stadium.
updated 7:36 AM EDT, Tue October 14, 2014
George Clooney's new wife, is now Amal Clooney, raising the issue of married names.
updated 1:57 PM EDT, Tue October 14, 2014
The mysterious unmanned X-37B space plane returns to Earth after more than two years in space. But the U.S. Air force isn't saying much.
Browse through images from CNN teams around the world that you don't always see on news reports.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT