A “Hiroshima” of energy

"Al Gore, who evidently never learned that the metric unit of energy is the joule, has been bleating the factoid that Anthropogenic Global Warming is the equivalent of 400,000 Hiroshima-sized atomic bombs a day of energy added to the planet. ... normal sunlight is the equivalent of 175 million 'Hiroshimas' of energy a day. Al's getting all hot and bothered over an increase of one quarter of one percent -- and that's assuming his original number for 'forcing' is correct." (02/09/13)