Earth
Ex-sceptic says humans to blame for global warming
Physicist Richard Muller now says he is convinced that humans are causing climate change, but nobody is convinced by his analysis
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Physicist Richard Muller now says he is convinced that humans are causing climate change, but nobody is convinced by his analysis
Climate change deniers will seize on the discovery of a warm period 2000 years ago, yet the finding strengthens the case for human-made global warming