Roel Steenbergen

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Study: Renewable electricity could be competitive

A carbon price of between $50 and $100 per tonne of carbon dioxide would make coal-fired and gas-fired power less economical than renewable …

Bitcoin: How An Unregulated, Decentralized Virtual Currency Just Became A Billion Dollar Market

Hang around in the tech industry long enough and you or someone you know will be heard saying, “that’s so crazy it just might work.” Two years ago, if you’d have told me that an open-source, P2P currency would soon be a thriving, billion-dollar market, I would’ve told you that you were on a lonely …

Doctor Who: a 50-year history in one data visualisation

Doctor Who is 50 this year - and back on our screens tomorrow. This guide to every episode in the long-running science fiction serial by Guardian …

Soviet N1 Moon Rocket Documentary Part 5