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That stiff up-front cost has always been the biggest barrier to residential use of solar power. An average set of rooftop panels costs $20,000 to $30,000 and takes 10 to 15 years to produce enough electricity to pay for itself--a deal not unlike asking a new cell-phone owner to pay in advance for a decade's worth of minutes. But that equation will change as the cost of solar panels drops and the price of fossil-fuel-generated electricity rises. (Letvin's utility provider just put in for a 30% rate increase for the heaviest...
...world would be in much better - and cooler - shape. But ultimately, the road to a new climate deal runs through one city: Washington. "The U.S. has to be a part of any new climate agreement," says Rajendra Pachauri, the chairman of the UN's Nobel Prize-winning Intergovernmental Panel on Climate Change. "In the absence of that, you won't have a response from the large number of countries needed for a collective response." If Washington leads, the big developing countries like India and China will be forced to follow, or stand alone against an emerging international consensus. Will that...
...more fun to hang out with than the sort that never leaves their laptops. They're spiritual descendants of the polar explorers who crossed the ice over a century ago with dogs and sleds and little else, who - as Rajenda Pachauri, the chairman of the Intergovernmental Panel on Climate Change and one of our traveling group, says - "never knew whether they'd come back alive." Sometimes it can seem that a sense of adventure has been lost by modern science. Not by people at NEEM...
...major coastal cities like New York City and Shanghai. No one expects that to happen anytime soon (or even anytime not soon), but the scary truth is that we don't really know how Greenland will react to rapid warming. The most recent assessment by the Intergovernmental Panel on Climate Change didn't directly take into account the possible loss of the Greenland ice sheet, noting that the data were too uncertain. We don't even know exactly how much ice is being lost from the island...
...What makes these findings especially troubling, of course, is that the International Panel on Climate Change (IPCC) predicts that ocean-water temperatures are likely to rise by 1.5 degrees over the course of this century - and they may even go up a few degrees more. "If climate change really does result in a rise of 4 degrees, which is the maximum the IPCC predicts, and if species can't adapt in time or migrate, then in the most sensitive cases of TSD, we're looking at extinction," says Piferrer...