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.
I'd prefer meeting them rather than an intelligent race of technologically advanced insects. ;-) To read more, click here.