by John_A » Thu 24 Oct 2013, 15:34:40
$this->bbcode_second_pass_quote('Rune', 'T')o generate electricity for a city of 1 million people for 1 year:
A. Mine 3,200,000 tonnes of coal - emit 8,500,000 tonnes of greenhouse gases and particulates. Use a landfill to bury 900,000 cubic metres of toxic/radioactive fly-ash.
B. Mine 50,000 tonnes of uranium ore - emit no greenhouse gases - produce 24 tonnes of radiotoxic 'waste'. Store the wastwe for tens of thousands of years.
C. Mine 50 tonnes of equivalent thorium ore - emit no greenhouse gases - produce 0.8 tonnes of radiotoxic 'waste', store it for 300 years.
Which choice did Dr. James Hansen recommend?
Hansen isn't into solutions. He once told the world that if they immediately stopped emitting CO2, temperatures would rise about 2C by about 2000. The world ignored him, combusted and emitted CO2 more and more than ever before, and temperature didn't come close to rising by 1F, let alone 2C. The lesson? Burning and emitting CO2 causes far less temperature change then stopping it altogether.....thank you Dr. Hansen for that little lesson in how well you understand what you are talking about.
Stephen Schneider came along soon thereafter to tell us WHY Hansen and Co had to do these things.
$this->bbcode_second_pass_quote('', 'O')n the one hand, as scientists we are ethically bound to the scientific method, in effect promising to tell the truth, the whole truth, and nothing but — which means that we must include all the doubts, the caveats, the ifs, ands, and buts. On the other hand, we are not just scientists but human beings as well. And like most people we'd like to see the world a better place, which in this context translates into our working to reduce the risk of potentially disastrous climatic change. To do that we need to get some broadbased support, to capture the public's imagination. That, of course, entails getting loads of media coverage. So we have to offer up scary scenarios, make simplified, dramatic statements, and make little mention of any doubts we might have.
Discover, October, 1989