People scream outside the United Nations Intergovernmental Panel on Climate Change (IPCC) to demand immediate political action on Climate debate on September 27, 2013 in Stockholm. The panel said it was more certain than ever that humans were the cause of global warming and predicted temperatures would rise another 0.3 to 4.8 degrees Celsius this century. AFP PHOTO/JONATHAN NACKSTRAND        (Photo credit should read JONATHAN NACKSTRAND/AFP/Getty Images)

Study: Limiting global warming to under 2° Celsius requires ceasing emissions by 2085 AND technology to remove carbon from atmosphere

If anthropogenic global warming is to be limited to under 2° Celsius (3.6° Fahrenheit) then technology will need to be developed to remove carbon dioxide from the atmosphere, in addition to the complete ceasing of greenhouse gas emissions by 2085, according to a new study from the National Center for Atmospheric Research.