Mother Gaia Will Survive

George Will writes about the issue of global warming and man's ability...or inability...to "destroy the earth" because of our energy choices.  Robert Laughlin, a Nobel Prize Winning physicist, reminds us that Mother Gaia works in geologic time periods almost unfathomable to poor arrogant humans:

Damaging this old earth is, Laughlin says, “easier to imagine than it is to accomplish.” There have been mass volcanic explosions, meteor impacts, “and all manner of other abuses greater than anything people could inflict, and it’s still here. It’s a survivor.”

Laughlin acknowledges that “a lot of responsible people” are worried about atmospheric concentrations of carbon dioxide from burning fossil fuels. This has, he says, “the potential” to modify the weather by raising average temperatures several degrees centigrade and that governments have taken “significant, although ineffective,” steps to slow the warming. “On the scales of time relevant to itself, the earth doesn’t care about any of these governments or their legislation.”

Buy a hybrid, turn off your air conditioner, unplug your refrigerator, yank your phone charger from the wall socket—such actions will “leave the end result exactly the same.” Someday, all the fossil fuels that used to be in the ground will be burned. After that, in about a millennium, the earth will dissolve most of the resulting carbon dioxide into the oceans. (The oceans have dissolved in them “40 times more carbon than the atmosphere contains, a total of 30 trillion tons, or 30 times the world’s coal reserves.”) The dissolving will leave the concentration in the atmosphere only slightly higher than today’s. Then “over tens of millennia, or perhaps hundreds” the earth will transfer the excess carbon dioxide into its rocks, “eventually returning levels in the sea and air to what they were before humans arrived on the scene.” This will take an eternity as humans reckon, but a blink in geologic time.

It seems, Laughlin says, that “something, presumably a geologic regulatory process, fixed the world’s carbon dioxide levels before humans arrived” with their SUVs and computers. Some scientists argue that “the photosynthetic machinery of plants seems optimized” to certain carbon dioxide levels. But “most models, even pessimistic ones,” envision “a thousand-year carbon dioxide pulse followed by glacially slow decay back to the pre-civilization situation.”

Human decisions cannot destroy the earth. We can't even get close. At best we could create a nuclear winter that might kill off our own species and many others, but the earth would go on and figure out another way to exist, much as happened after the dinosaurs were wiped out and mammals took over.