by Nick van der Leek
About 21 000 years ago, half of present day London was swallowed under towering walls of solid ice, and in America, glaciers extended as far south as Connecticut. ‘So what?’ we say, ‘that was 21 000 years ago.’
During the 80’s and 90’s Global Warming (and its itinerant side effects) were commonly mistaken and dismissed as changes that might occur in centuries, or over tens of centuries.
Well now, that’s changed. Studies of ice cores have demonstrated that Climate Change – drastic change – can happen within a span of 15 years or less. It’s now clear that our climate is inherently unstable. It’s possible that we are here today, with Toyotas, TV and Tiger Oats simply because we’ve been blessed with an anomalously long period (called the Holocene) of climate stability. We’re in Cozy Ages.
Some believe that the next Ice Age was scheduled to start in the last 200 years (another way of saying ‘now’ if you’re a climatologist or geologist’). But instead of a prescribed cooling, the Industrial Revolution kicked in, and thanks to the cheap oil fiesta, instead of getting cooler we’ve been pouring massive amounts of heat inducing agents (principally CO2) into the atmosphere. We may have delayed a little Ice Age in favor of a large Ice Age.
Paradoxically, an Ice Age is always preceded, as far as we know, by a period of warming (including a period of increased CO2 levels: warming = higher CO2 levels necessarily). This has occurred naturally throughout the ages, sometimes with catastrophic effects. Some authors like Kunstler describe is as a wobble going increasingly out of kilter, leading to a crash. Others call it a ‘runaway’ effect, Al Gore describes it as a ‘tailspin of epic destruction’.
In it he proposes that the world is cooking, and we have about 10 years to avert a complete meltdown in our planet’s climate mechanism. Think unstable weather, winds, hot, cold, dry, floods – plenty of extremes, storms and destruction.
Personally I doubt whether we can reverse the momentum of our endless attempts to achieve ‘growth’. Perhaps what we can do is build atmosphere processors (on the scale of the Terraformers in the movie Aliens) designed to cool and purify this planet’s atmosphere. But, with over 50 000 new cars being added to South Africa’s roads each month, I’m not sure how much it will help even if we do suddenly receive a memo with urgent present danger information and crisis resolution strategies.
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