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Wednesday, September 30, 2009

Post-human Earth: How the planet will recover from us - environment

[Link: New Scientist] "Not so, says James Hansen, director of NASA's Goddard Institute for Space Studies. He argues that past episodes are a poor guide to what will happen in the future, for the simple reason that the sun is brighter now than it was then. Add that to the mix and the release of methane hydrates could lead to catastrophic, unstoppable global warming - a so-called 'Venus syndrome' that causes the oceans to boil away and dooms the Earth to the fate of its broiling neighbour."

Most conversations about Climate Change focus on the short term. What will the weather be like around here as Global Warming kicks in? This article is grappling with the bigger picture. As we pour CO2 into the atmosphere by burning hydrocarbons, we are returning the earth to a state that hasn't been seen for millions of years. Who knows what will happen as this occurs? All of earth's systems will be effected. Much of the earth may well become uninhabitable. The good news is that we will run out of hydrocarbons to burn eventually and we won't be able to add CO2 to the atmosphere. The bad news is that when we run out of hydrocarbons to burn we will also be out of energy needed to combat the changing conditions.

Saturday, September 12, 2009

Birth control could head off climate crunch

[Link: Reuters] Birth control and new technologies -- not lifestyle change alone -- may be needed to head off a combined climate, food and energy crunch later this century, said the head of Britain's science academy Martin Rees.

It is amazing how we can't talk about population control. I really don't think we will ever find a way to do it either. We are programmed to reproduce just like we are programmed to breath air, and limiting reproduction is an ultimate threat. But that doen't change the fact that there will soon be more of us than there are resources to support us. Population that we can't control will be controlled by natural processes and natural population processes are generally not very pretty.