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The world is not prepared for the discovery of life on another planet even though it may only be a couple of years away, Nasa’s Chief Scientist has warned.
Next summer, two rovers from Nasa and the European Space Agency (ESA), will travel to Mars to drill horizontally into rocks and deep into the surface, in the hope of finding evidence of living organisms.
Original interview:

Nasa chief scientist: 'We’re close to finding and announcing alien life on Mars....but is the world ready?'
The world is not prepared for the discovery of life on another planet even though it may only be a couple of years away, Nasa’s Chief Scientist has warned.

Not behind a paywall:

Life on Mars could be found in two years but world is ‘not prepared’, warns Nasa
Leading astronomer says discovery will open up ‘whole new line of thinking’
