When did James Hansen first use the phrase global warming before the U.S. Senate?
James Hansen testified before the U.S. Senate and used the phrase global warming in 1988 to describe human-caused temperature rises.
Questions about Climate change
Short answers, pulled from the story.
What is the average temperature increase from 2014 to 2023 according to the Intergovernmental Panel on Climate Change?
The Intergovernmental Panel on Climate Change states that observed warming from 2014 to 2023 averaged 1.19 degrees Celsius above pre-industrial levels.
How much has atmospheric carbon dioxide increased compared to the end of the pre-industrial era?
Atmospheric carbon dioxide concentrations have increased by roughly 50% compared to the end of the pre-industrial era due to burning fossil fuels since the Industrial Revolution began.
Why was there little net warming between the 18th century and 1970 despite greenhouse gases?
Between the 18th century and 1970, there was little net warming because sulfur dioxide emissions created cooling aerosols that offset greenhouse gas heat.
How many more deaths are scientists projecting will occur due to climate change by 2050?
Scientists project that 14.5 million more deaths will occur due to climate change by 2050 as extreme weather events increase illness and death rates.