NASA Scientist Warns Obama on Global Warming

James Hansen, head of NASA's Goddard Institute for Space Studies, has appealed to Obama in a letter for quick and decisive action on climate change. His recommendations:

• Moratorium on and phasing out of coal power stations without carbon capture, what Hansen calls the "sine qua non for solving the climate problem". Coal CO2 emissions are the same as those of other fossil fuels combined.
• Raising the price of emissions via a "carbon tax and 100% dividend". This is a tax mechanism to "decarbonise" the economy without a net take from taxpayers. Low carbon users are rewarded while high users are punished.
• Urgent research on "fourth generation" nuclear power with international co-operation. This offers one of the best options for nearly carbon-free power, according to Hansen. It would also help to solve the nuclear waste problem by using that material as fuel.