Earth Hour – Celebrate the WarmthPosted: March 31, 2015
Saturday 28th March is “Earth Hour” – a time to sit in the dark and appreciate the benefits of our cheap reliable hydrocarbon-energy.
[Like these candles, for example, from the WWF sponsored Earth Hour home page – Anthony]
We should spend Earth Hour giving thanks for warmth.
Just thirteen thousand years ago, Earth was in the grip of a deathly ice age. Sea levels were indeed much lower but much of the land surface was covered by thick sheets of ice. Life struggled to survive and many species were extinguished by the sterile suffocating ice.
Without any help from humans, Earth escaped from the ice. And as the oceans warmed they expelled part of their dissolved carbon dioxide which nurtured an enormous increase in plant and animal life.
But the ice still lurks near the poles, and Earth has suffered several cold relapses. The…
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