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.
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After Record Pollution, Parisians See Blue Sky As Climate Summit's Host Goes Car-Free
A rise in air pollution this year made France's capital the most polluted city in the world – so when Mayor Anne Hidalgo launched the idea of a car-free day, carbon exhaust was top of the agenda with the COP-21 conference close at hand.
