I saw a thought-provoking documentary last night on Horizon about Global Dimming. Why the sun seems to be 'dimming'.
It turns out that the rich polluting European countries may have been responsible for the horrific Ethiopian droughts of several decades ago. Unfortunately the 'cleaning' (removing particles but not removing greenhouse gasses) could actually create a far worse problem to come.
Are we actually ruining the world for OUR children?
'Scientists are now worried that dimming, by shielding the oceans from the full power of the Sun, may be disrupting the pattern of the world's rainfall.
There are suggestions that dimming was behind the droughts in sub-Saharan Africa, which claimed hundreds of thousands of lives in the 1970s and 80s.
There are disturbing hints the same thing may be happening today in Asia, home to half the world's population.
"My main concern is global dimming is also having a detrimental impact on the Asian monsoon," says Professor Veerhabhadran Ramanathan, professor of climate and atmospheric sciences at the University of California, San Diego. "We are talking about billions of people."
Even the most pessimistic forecasts of global warming may now have to be drastically revised upwards.
That means a temperature rise of 10 degrees Celsius by 2100 could be on the cards, giving the UK a climate like that of North Africa, and rendering many parts of the world uninhabitable.
That is unless we act urgently to curb our emissions of greenhouse gases.'
Friday, January 14, 2005
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