LifeExo-evolution: Aliens who hide, survive If evolution is driving aliens to be inconspicuous, it would solve the nagging Fermi paradox – and suggest Earthlings should be more careful 51¶¯Âþ
LifeBiology's 'dark matter' hints at fourth domain of life Over 99 per cent of organisms remain unknown to science – so could some of them sit outside the classic three domains of cellular life? 51¶¯Âþ