Before he was appointed Obama's Secretary of Energy, Steve Chu made a four-minute video about climate change called Titanic - The Sequel.
Last week Chu attended the Nobel Laureate dinner in London, where he was quizzed about the analogy. He says he's still looking for a better one.
New colour seen for the first time by tricking the eyes
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A device has enabled people to see a new a shade of blue-green, which they
say is more intense than any experienced before
6 hours ago
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