In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.

A cavernous bunker on a remote island above the Arctic Circle, where polar bears roam, holds the key to 12,000 years of agriculture but also to food supplies for future generations with countries urged to deposit seed samples there. 
  
 Welcome to the Svalbard Global Seed Vault, which turned 10 on Monday. It holds nearly one million seed samples from the world's gene banks - an agricultural back-up in the event of disasters ranging from nuclear war to climate change. 
  
 "It's fair to say that agriculture has never, ever faced bigger challenges than today," Marie Haga, executive director of The Crop Trust, told the Thomson Reuters Foundation. 
  
 The Crop Trust, an international group working to protect crop diversity, runs the vault in collaboration with the Norwegian government and the Nordic Genetic Resource Center 
  
 (NordGen). 
  
 Among the challenges facing agriculture, experts have said, are rising hunger, population growth and greater climate pressures. 
  
 That means the world needs to produce more food that is more nutritious, and to do so "on less land, with less water, less pesticides, less fertilizer to keep within what the planet can stand", Haga said. 
  
 The answer could lie in a modest room in the vault, measuring 12 meters (40 ft) by 27 metres, where nations have deposited seed samples of food crops for safekeeping, she said. 
  
 Shelves of boxes, stacked in neat rows at minus 18 degrees Celsius (0F), hold seeds from the United States and Russia, Australia and North Korea, and Nigeria and Colombia to name just a few. 
  
 In the decade since the vault was founded, 73 institutions have deposited crop-seeds at this so-called Bank of Last Resort. 
  
 The Crop Trust is urging other gene banks around the world to follow suit. China is the notable omission, it said, although discussions are ongoing. 
  
 Haga's concerns are echoed by Carly Fowler, a renowned American agriculturalist who helped to found the seed vault. 
  
 "Agriculture faces a historically unprecedented combination of challenges. At the top of the list is climate change," he told the Thomson Reuters Foundation. 
  
 "We're looking at climates in the near future that haven't existed in the entire history of agriculture ... We have to be proactive to make sure that agriculture does get ready for climate change." 
  
 'The Bank of Last Resort' 
  
 To do that the world needs a diverse sets of crops in its arsenal, but that is exactly what it has been losing, experts said. 
  
 "Our food system is extremely vulnerable. We are basing ourselves now on 12 plants and five animal species for 75 percent of the food we eat," said Haga, a former Norwegian politician. 
  
 Historically, farmers cultivated at least 7,000 different plants to eat. Today, 60 percent of global calorie intake comes from wheat, rice and maize, said Haga. 
  
 This loss is partly due to a focus on "productivity, appearance and taste" at the expense of other aspects such as nutrition, said Kent Nnadozie at the United Nations' Food and Agriculture Organization (FAO). 
  
 Nnadozie, who is secretary of the FAO's International Treaty on Plant Genetic Resources for Food and Agriculture, said one consequence is that a major disease or virus "could wipe out the entire crop." 
  
 To combat that risk, the Treaty - which was brokered by the United Nations - facilitates seed exchanges between global gene banks to research and develop new crop varieties. Currently, 144 countries have ratified the Treaty. 
  
 Worldwide, the FAO said, more than 1,700 gene banks of varying sizes hold collections of food crops. 
  
 But many are exposed to disasters and conflict; some have to deal with more mundane problems such as a lack of funding, poor management, malfunctioning equipment or erratic power supplies. 
  
 The loss of a crop variety is irreversible. 
  
 Ahmed Amri, from Morocco's International Center for Agricultural Research in the Dry Areas (ICARDA), knows those threats well. 
  
 In October 2015, ICARDA became the first to withdraw seeds from Svalbard after Syria's civil war had damaged a seed bank near the city of Aleppo. 
  
 The gene bank was relocated to Morocco and Lebanon, the seeds have been grown, and re-depositing began last year. On Monday, ICARDA deposited more than 8,600 seed samples. It was one of 23 institutions to hand over 77,000 samples on the day. 
  
 "These samples include wheat, barley, durum wheat and bread wheat, lentils, chickpeas, fava beans and wild relatives of these species ... So this is a big achievement," Amri told the Thomson Reuters Foundation. 
  
 The FAO's Nnadozie said the Syria example showed how well the vault could work. 
  
 "It's almost like you put your money in a long-term savings account. Once you are in a desperate situation and you need to, (you) take some money, and then you can put it back again." 
  
 "This is the final backup, should anything go wrong - natural disasters, crisis, war, nuclear, whatever - you can always go back there." 
  
 Climate pressures 
  
 The Svalbard archipelago, the furthest north reachable on a scheduled flight, was chosen for the vault's location because it is remote, there are no volcanoes or earthquakes, and the permafrost keeps the seeds in deep-freeze. 
  
 Yet the vault, built 120 meters (400 feet) into the rock, is facing its own climate pressures. 
  
 An unexpected thaw of permafrost meant water flowed into the entrance of the vault's tunnel in late 2016. The seeds were not in danger, but Norway said on Friday it would spend 100 million krone ($13 million) to upgrade the vault. 
  
 "When I came up here the first time in 1985 ... there was always ice on the fjord. Now you never see complete ice on the fjord," Haga said. 
  
 Scientists have warned that the Arctic Ocean could be ice-free much sooner than previous predictions, which forecast sea ice would first disappear completely during summer months between 2040 and 2050. 
  
 Fowler said he was confident the seeds were safe, but welcomed Norway's decision to strengthen the vault. 
  
 "We'll be tight and dry and we'll deal with whatever climate change gives us," he said. ||||| The entrance to the international gene bank Svalbard Global Seed Vault (SGSV) is pictured outside Longyearbyen on Spitsbergen, Norway, February 29, 2016. REUTERS/Heiko Junge/NTB Scanpix 
  
 OSLO (Reuters) - Norway plans to spend 100 million Norwegian crowns ($13 million) to upgrade a doomsday seed vault on an Arctic island built 10 years ago to protect the world’s food supplies, the government said on Friday. 
  
 The Svalbard Global Seed Vault is meant as a natural deep freeze to back up the world’s gene banks in case of disasters ranging from nuclear war to global warming. It has about 900,000 seed samples. 
  
 The revamp would cover “construction of a new, concrete-built access tunnel, as well as a service building to house emergency power and refrigerating units and other electrical equipment that emits heat through the tunnel,” the Agriculture Ministry said in a statement. 
  
 An unexpected thaw of permafrost meant some water flowed into the entrance of the tunnel to the vault in late 2016. A decade ago, Norway said that it had cost $9 million to build the facility. 
  
 In 2015, researchers made a first withdrawal from the vault after Syria’s civil war damaged a seed bank near the Syrian city of Aleppo. The seeds were grown and re-deposited at the Svalbard vault last year. 
  
 “This demonstrates that the seed vault is a worldwide insurance for food supply for future generations,” Agriculture Minister Jon Georg Dale said in a statement. 
  
 ($1 = 7.8579 Norwegian crowns) ||||| Image copyright Getty Images Image caption Norway's Svalbard Global Seed Vault first opened in February 2008 
  
 The vault storing the world's most precious seeds is taking delivery on Monday of consignments that will take it to the one million mark. 
  
 More than 70,000 crops will be added to frozen storage chambers buried deep within a mountain in the Arctic Circle. 
  
 Cereal staples, unusual crops like the Estonian onion potato, and barley used to brew Irish beer are among them. 
  
 Monday marks the tenth anniversary of the Global Seed Vault in Svalbard. 
  
 One of three chambers is now almost full of packets of seeds, each a variety of an important food crop. 
  
 The number of deposits amounts to 1,059,646. This number excludes emergency withdrawals of about 90,000 seeds needed to make up for precious samples stranded in Syria due to the conflict there. 
  
 "Hitting the million mark is really significant," said Hannes Dempewolf, senior scientist of the Crop Trust, an international organisation dedicated to conserving the diversity of the crops we rely on for food. 
  
 "Only a few years back I don't think we would have thought that we would get there." 
  
 Black-eyed pea 
  
 Crop diversity is regarded as essential for safeguarding the future of the world's food supply amid pressures such as drought and climate change. 
  
 The reinforced vault is designed to hold back-ups of samples stored elsewhere in seed banks around the world. 
  
 Image copyright Ireland Department of Agriculture, Food Image caption Hunter barley seeds are being deposited by the Irish government 
  
 More than a million different food crops have been deposited by 73 institutions since 26 February 2008. 
  
 In 2015 and 2017 deposits of wheat, lentil, chickpea and other crops stranded in a seed bank in Syria due to the civil conflict were withdrawn by the International Center for Agricultural Research in the Dry Areas. 
  
 Many of the seeds have been grown up and replaced. 
  
 The vault opens about twice a year for deposits. Monday's additions include unique varieties of rice, wheat and maize; black-eyed pea - a major protein source in Africa and South Asia; and Bambara groundnut, which is being developed as a drought tolerant crop in Africa. 
  
 The resurgence of craft brewing and distilling in Ireland has led to requests from breweries for seeds of malting barley to be added to the collections. 
  
 "The hunter variety is a type of malting barley that is important for Irish crop brewing and distilling," said Dempewolf. 
  
 Reinforcements 
  
 Last year, the vault suffered flooding to the entrance of the vault due to extreme weather. However, the water did not reach the frozen chambers deep within where the seeds are stored. 
  
 New waterproof walls have been fitted to make sure water can never enter the actual vault and reinforcements are underway to prepare it for a warmer, wetter future. 
  
 Scientists estimate that there are about 2.2 million unique varieties of crops in the world's gene banks that will eventually be deposited at Svalbard. 
  
 "The Svalbard Global Seed Vault is an iconic reminder of the remarkable conservation effort that is taking place every day, around the world and around the clock - an effort to conserve the seeds of our food crops," said Marie Haga, executive director of the Crop Trust. 
  
 "Safeguarding such a huge range of seeds means scientists will have the best chance of developing nutritious and climate-resilient crops that can ensure future generations don't just survive, but thrive." 
  
 Follow Helen on Twitter. |||||
Monday was a "really significant" day for the so-called Doomsday Vault—and not just because it was its 10th birthday. The Global Seed Vault in Svalbard, Norway, has since 2008 stored seeds within a mountain on a Norwegian island 800 miles from the North Pole, and on Monday the number of crops it stores crossed the 1 million mark, thanks to a new shipment that included varieties of black-eyed pea and the Bambara groundnut. The BBC puts its number of deposits at 1,059,646, which is 90,000 less than what could have been following a withdrawal related to the war in Syria. That's enough to nearly fill one of the vault's three chambers, leaving room for what scientists believe will be the eventual total count: 2.2 million crops. Voice of America reports 73 institutions from around the globe have contributed seeds, and it points out a notable country not found on the list: China, though it's apparently discussing the possibility of making a deposit. Seeds aren't the only thing pouring into the vault: money, too, in order to extend the vault's "viability," as Bloomberg puts it. Norway on Friday announced $13 million in upgrades to what was originally a $9 million construction job, reports Reuters. It quotes the Agriculture Ministry's description of the planned work: "construction of a new, concrete-built access tunnel, as well as a service building to house emergency power and refrigerating units and other electrical equipment that emits heat through the tunnel." (There was a breach at the vault last year.)