PROJECT 02 - James Hansen on his take about climate change on TedTalk

James Hansen talks about the generality of climate change and why it is important to speak on it. Hansen states, “I was fortunate to join NASA and successfully propose an experiment to fly to Venus. Our instrument took this image of the veil of Venus, which turned out to be a smog of sulfuric acid. But while our instrument was being built, I became involved in calculations of the greenhouse effect here on Earth, because we realized that our atmospheric composition was changing.” Hansen talked about the greenhouse effect telling me, “… that gasses such as CO2 absorb heat, thus acting like a blanket warming Earth’s surface. In Hansen’s Ted Talk he states that, “By 15 years later, evidence of global warming was much stronger. Most of the things mentioned in our 1981 paper were facts. I had the privilege to speak twice to the president’s climate task force. But energy policies continued to focus on finding more fossil fuels.”

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Global warming is affecting a lot of folks. Stated in the Ted Talk, “The Texas, Oklahoma, Mexico heatwave and drought last year, Moscow the year before and Europe in 2003, were all exceptional events, more than three standard deviations outside the norm. Fifty years ago, such anomalies covered only two- to three-tenths of one percent of the land area. In recent years, because of global warming, they now cover about 10 percent — an increase by a factor of 25 to 50.” Lastly he tells me why he is alarmed on climate change, how clear the science is, and communication is key to the urgency of the situation and how we can find effective solutions.