Our Dave's philosopy, uncannily like the BBC 's, is outlined on one of his websites, this one about his failed mission to traverse the Arctic in 2006:
'Now that I’m back at home safely it’s crystal clear in my mind what I left behind is a rapidly dying ecosystem. Over the last 100 days I’ve had the unique privilege to call the Arctic Ocean my home. This opportunity has given me a first hand glimpse at the truly devastating effects of global warming and climate change. It's fair to say that most eco systems are usually very capable of maintaining themselves but like everything in life there is always a breaking point when you push things too far, the same applies to the Arctic.With a grasp of science like that, no wonder the BBC thinks he's a true eco-warrior!
'Prior to this expedition I don't think I had truly grasped the sensitivity of our climate systems. The bottom line is they are littered with a multitude of tipping points and feedback loops which when crossed replace the so called 'slow creep' of environmental decay with a sudden and self perpetuating collapse.'
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