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.
Arpa-E
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US agency reaches 'holy grail' of battery storage sought by Elon Musk and Gates
The breakthrough in next generation battery technology could transform America's electrical grid within five to 10 years, said the research agency Arpa-E – which seized on a discovery hotly pursued by Bill Gates, Elon Musk and others.
