Twenty years ago, a scientist has warned America about the danger of global warming. Today, the greenhouse gas concentration has passed the dangerous level and it is important for us to do drastic actions to get back to 1988 levels.
Director of the Goddard Institute of Space Sciences, Jim Hansen, said that "we're toast" if we do not change. He said that coal-fired power plants that do not capture carbon dioxide emissions should not be used in the US after 2025 and be eliminated from the world by 2030 to cut emissions.
He stated that the Arctic is the first sign of global warming and it happens as what has been predicted. It is said that within 5 or 10 years, the Arctic will be free of ice in the summer.
This news was taken from NASA warming scientist: 'This is the last chance'.
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