The Arctic’s geological record provides all the evidence we need that global warming is man’s doing, experts say. A closer look at the sediment timeline has shown that increased ice melt falls right in line with the birth of the Industrial Age, when those billowing clouds of greenhouse gases first started to flow from factory smokestacks.
From the LA Times:
For more than 2,000 years, a natural wobble in Earth’s axis has caused the Arctic region to move farther away from the sun during the region’s summer, reducing the amount of solar radiation it receives. The Arctic is now 600,000 miles farther from the sun than it was in AD 1, and temperatures there should have fallen a little more than 1 degree Fahrenheit since then.
Instead, the region has warmed 2.2 degrees since 1900 alone, and the decade from 1998 to 2008 was the warmest in two millenniums, according to a team headed by climatologist Darrell S. Kaufman of Northern Arizona University.
Not only was the last half-century the warmest of the last 2,000 years, “but it reversed the long-term, millennial-scale trend toward cooler temperatures,” Kaufman said.
The results seem to negate the primary argument of those who say the current warming of Earth is simply a natural variation, he said.
It’s not too difficult to understand the argument that people have against anthropomorphic global warming – that we, as humans, are simply too small and insignificant in the grand scheme of things to cause such changes in the earth and its natural balance. After all, nature is quite an amazing force.
But, to believe that we aren’t capable of causing global warming is to ignore the massive destruction we have unleashed upon this planet as we rose to the top of the food chain and began industrializing. We have changed the atmosphere. We have destroyed ecosystems and decimated much of the rainforest that would otherwise be helping to balance the greenhouse gases we’re pumping into the air.
It’s real, it’s happening, and we did it. Now we have to find a way to make up for it.
Link [LA Times]
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