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.
Paris climate goals
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Costa Rica Got 99% Of Its Energy – That's Right, 99% – From Renewables In 2015
Officials also say the country spent 285 days powered by 100 percent renewable sources – more than two-thirds of the year.
