James Hansen Warns of a Short-Term Climate Shock Bringing 2 Degrees of Warming by 2050
By Bob Berwyn
A team of scientists led by former NASA climate researcher James Hansen, who formally raised the alarm about climate change to U.S. government leaders in his 1988 testimony to Congress, is working on a new study that warns of a possible short-term spike of planetary heating 2 degrees Celsius above pre-industrial levels by 2050.
Related Knowledge Center: Climate science
What began as a theory in the 1890s — that industrial emissions of carbon dioxide could increase global temperatures — had progressed to a scientific fact a century later. Scientists across a range of disciplines are studying the impact of the still-growing concentration of carbon dioxide and other so-called “greenhouse gases” in the atmosphere as they call for industrial and governmental policies to slow, then halt, the warming of the planet.