'Doomsday' Arctic seed vault gets boost as efforts to secure food supplies ramp up

The Svalbard Global Seed Vault will add 19,500 rare seed variety samples from across the world to its collection

A 'doomsday' Arctic seed vault on Norway's Spitsbergen island is set to receive its most diverse batch of seed donations yet as efforts to secure the world's food supplies ramp up amid rising climate concerns.

The Svalbard Global Seed Vault, built to protect the world's food stock from disasters ranging from nuclear war to global warming, will add 19,500 rare seed variety samples from across the world to its collection on Tuesday, taking its total stash to more than 1.2 million.

The vault, set in permafrost caves on an arctic mountainside halfway between mainland Europe and the North Pole, was launched in 2008 as a backup for the world's national and regional gene banks that store the genetic code for thousands of plant species.

It has seed samples from nearly every country in the world, and played an essential role between 2015 and 2019 in rebuilding seed collections damaged during the war in Syria.

"The whole of humanity relies on the genetic diversity of crops maintained in the world’s gene banks, and the Seed Vault is the last line of defence against the loss of that diversity," said Sandra Borch, Minister of Agriculture and Food for Norway.

Svalbard, which also serves as a backup for plant breeders to develop new crop varieties more resistant to climate change, opened its doors to public at large for the first time on Tuesday by launching a free virtual tour of its subterranean seed chambers.

The chambers, which are only opened three times a year to limit the seeds' exposure to the outside world, boast temperatures of around -18 degrees Celsius.