NASA satellite reveals surprise about penguin poo on Danger Islands - Siliconrepublic.com

1. NASA satellite reveals surprise about penguin poo on Danger Islands  Siliconrepublic.com
2. Adélie penguins poop pink guano. You can see it from space.  Vox.com
3. How This Supercolony of 1.5 Million Penguins Stayed Hidden for Nearly 3,000 Years  Live Science
4. View full coverage on Google News

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