Rob Shvern on Politics

A few weeks ago, NASA’s chief climatologist, James Hansen, submitted a paper to Science magazine with several coauthors. The abstract attached to it argued — and I have never read stronger language in a scientific paper — that “if humanity wishes to preserve a planet similar to that on which civilization developed and to which life on Earth is adapted, paleoclimate evidence and ongoing climate change suggest that CO2 will need to be reduced from its current 385 ppm to at most 350 ppm.”

Hansen cites six irreversible tipping points — massive sea level rise and huge changes in rainfall patterns, among them — that we’ll pass if we don’t get back down to 350 soon; and the first of them, judging by last summer’s insane melt of Arctic ice, may already be behind us.

http://www.latimes.com/news/printedition/opinion/la-op-mckibben11-2008may11,0,2392815.story

From the end of World War II through the height of the Cold War, the US claim to superpower status rested on a vast sea of oil. As long as most of our oil came from domestic sources and the price remained reasonably low, the American economy thrived and the annual cost of deploying vast armies abroad was relatively manageable. But that sea has been shrinking since the 1950s. Domestic oil production reached a peak in 1970 and has been in decline ever since - with a growing dependency on imported oil as the result. When it came to reliance on imports, the United States crossed the 50% threshold in 1998 and now has passed 65%.

Though few fully realized it, this represented a significant erosion of sovereign independence even before the price of a barrel of crude soared above $110. By now, we are transferring such staggering sums yearly to foreign oil producers, who are using it to gobble up valuable American assets, that, whether we know it or not, we have essentially abandoned our claim to superpowerdom.

http://www.atimes.com/atimes/Global_Economy/JE10Dj05.html