Earth
Green Machine: Markets hint at 100-year energy gap
A study of share prices suggests investors don't expect alternative-energy technology to take off until 2140 – a century after we run out of oil
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Earth
Green machine: Heat scavengers come in from the cold
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Earth
Green machine: Trees may spell trouble for wind power
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Earth
Green machine: Where do solar cells go when they die?
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Earth
Green Machine: Wind farms make like a fish
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Earth
Green machine: Why our walls really should have ears
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Environment
Green machine: Squeezing solar juice from jellyfish
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Earth
Green machine: Perfecting the plant way to power
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Earth
Green machine: Wave power line jacks into the grid
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Earth
Green machine: Fighting the efficiency fallacies
Green machine is our weekly column on the latest advances in environmental technologies.
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Earth
Green machine: Don’t burn plant waste, bury it
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Environment
Green machine: Plug-free electric cars’ hidden cost
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Earth
Green machine: Aircon that doesn’t warm the planet
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Earth
Green machine: A salty solution for power generation
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