In Svalbard, Norway, lies buried treasure. Worries about climate change, war, and extinction led to the construction of the Svalbard Global Seed Vault. Here, on an Arctic island, in "the belly of a mountain," duplicates from seed banks around the world are stored, preserved for the future, should the need for them arise. Clendenan carefully outlines the purpose and creation of this protected collection. Her relatively simple text is accompanied by sidebars offering more detail on the challenges of transporting seeds, the difficulty of constructing the vault (workers had to be vigilant for roaming polar bears), and more. Ciccese's appealing illustrations signal the Arctic cold with shades of blue; a diverse workforce is bundled up against the frigid temperatures. In scenes depicting warmer climates, reds, greens, and browns abound as an equally diverse set of humans collect seeds, plant them, and enjoy the crops. Clendenan stresses that this is a truly international project: "Inside the vault, a walk down the aisles becomes a walk through the world.

" Younger readers may not entirely understand the need for the collection but will surely be engaged by the process; construction enthusiasts will especially appreciate the spreads focusing on the machines from around the world brought to this isolated place to bore into the mountain. Even the seed packets are designed to be nearly indestructible. A fascinating tale of conservation at its most creative. -- Kirkus Reviews.