The world has lost an incredible thinker and doer. I have lost an amazing friend. A void exists where before it was filled with David's optimism, humour and joy.
IPCC reports
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Exxon Scientist: Oil Giant Knew 35 Years Ago About Climate Change – And Denied It Ever After
A newly discovered email from Exxon's in-house climate expert reveals the world's biggest oil company knew about climate change but spent more than $30 million on think tanks and researchers who denied its existence.
