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This is a photograph of Boreal Toad tadpoles at the Native Aquatic Species Restoration Facility in Alamosa, Colorado. Thousands of rare boreal toads are bred each year at this hatchery for reintroduction into the wild. The toads used to be common above 8,000 feet in Colorado but have vanished from all but a few sites. A fungus appears to be killing them but other factors, such as climate change, may be involved. (Judy Walgren/The Rocky Mountain News)

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