How to stop an asteroid hitting Earth: Would people cooperate to face a global peril?

Earlier this year, while war and chaos continued to unfold further east, scientists gathered on the outskirts of Rome to discuss another sort of catastrophe. Astronomers and physicists from some of the world's top institutions grappled with a dire scenario: an asteroid up to 1,300ft in diameter – big enough to cause epochal damage – was hurtling towards Earth, and the countries likely to be hit included some of the poorest and most unstable in the world. Policymakers bickered over whether t