"Nasa's Kepler telescope scans the skies for 'habitable worlds' - but an American chemist has suggested the whole project might be a terrible idea.
Ronald Breslow suggests that life-forms based on slightly different amino acids and sugars could take the form of huge, ferocious dinosaurs that have
evolved to have human-like intelligence and technologies.
'We would be better off not meeting them,' says Breslow, who claims that it was a stroke of luck that an asteroid wiped out dinosaurs on earth,
leaving the field clear for mammals such as humans."
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