Some believe we will be threatened one day by rogue nanomachines that repicate catastrophically.
Sir Martin Rees quote Experiments that crash atoms together could start a chain reaction that erodes everything on Earth.
Sir Martin Rees quote Nuclear weapons can be dismantled, but they cannot be uninvented.
Sir Martin Rees quote The unfolding of intelligence and complexity could still be near its cosmic beginnings.
Sir Martin Rees quote The most crucial location in space and time could be here and now.
Sir Martin Rees quote Biography
Astronomer royal
