Science

Rapamycin can add years to your life, or none at all – it’s a lottery

AIs can’t stop recommending nuclear strikes in war game simulations

The world’s most elusive colour is worth billions – if we can find it

SpaceX’s 1 million satellites could avoid environmental checks

Cannibalism may explain why some orcas stay in family groups

Birdwatching may reshape the brain and build its buffer against ageing

Saturn’s rings may have formed after a huge collision with Titan

Landmark vitiligo cream targets immune cells that disrupt pigmentation