What did James Hansen tell Congress in 1988?
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What did James Hansen tell Congress in 1988?
During a senate meeting on June 23, 1988, Hansen reported that he was ninety-nine percent certain the earth was warmer then than it had ever been measured to be, there was a clear cause and effect relationship with the greenhouse effect and lastly that due to global warming, the likelihood of freak weather was steadily …
What did James Hansen do?
Dr. Hansen is best known for his testimony on climate change to congressional committees in the 1980s that helped raise broad awareness of the global warming issue. He was elected to the National Academy of Sciences in 1995 and was designated by Time Magazine in 2006 as one of the 100 most influential people on Earth.
When was the first warning of climate change?
In 1896, a seminal paper by Swedish scientist Svante Arrhenius first predicted that changes in atmospheric carbon dioxide levels could substantially alter the surface temperature through the greenhouse effect. In 1938, Guy Callendar connected carbon dioxide increases in Earth’s atmosphere to global warming.
Why I must speak about climate change James Hansen?
Top climate scientist James Hansen tells the story of his involvement in the science of and debate over global climate change. In doing so he outlines the overwhelming evidence that change is happening and why that makes him deeply worried about the future.
Who discovered climate change?
In 1896, Swedish scientist Svante Arrhenius discovered feedback loops that could accelerate climate change. A year after Arrhenius released his findings, American geologist Thomas Chamberlin examined carbon cycles to understand their connection to other phenomena.
Does James Hansen still work for NASA?
He left NASA in 2013, devoting more time to his “anti-government job” of advocacy. Hansen, still at Columbia University, has been arrested five times for environmental protests.
Who thought climate change?
Svante Arrhenius
In 1896 Svante Arrhenius calculated the effect of a doubling atmospheric carbon dioxide to be an increase in surface temperatures of 5–6 degrees Celsius. This 1902 article attributes to Svante Arrhenius a theory that coal combustion could eventually lead to human extinction.
Why I must speak out about climate change summary?
Who was father of global warming word?
A scientist who raised early alarms about climate change and popularised the term “global warming” has died. Wallace Smith Broecker was 87.
Who is considered the father of climate science?
Tyndall would later become known as “the father of climate science.” Climate science is the study of weather patterns over a long period of time, usually 30 years or more. In his message to the other scientists, Tyndall said that he was not aware of any other scientists who had published work on heat energy and gases.
How long does the world have left?
The upshot: Earth has at least 1.5 billion years left to support life, the researchers report this month in Geophysical Research Letters. If humans last that long, Earth would be generally uncomfortable for them, but livable in some areas just below the polar regions, Wolf suggests.
