A doomsday vault is being built in the Arctic. Scientists expect the project will safeguard crop diversity in the event of a global catastrophe.

Located on the remote Svalbard Island, roughly 1,000 km from the North Pole, the vault will hold about 1.5 billion seeds and 3 million crop varieties in a concrete tunnel drilled 70 metres into an ice-clad mountain and will be controlled remotely from Sweden. At temperatures of minus 18