The 3,000-year-old wooden toe was recently reexamined by researchers.
Construction of a demonstrator craft is expected to begin in 2019, with initial flight tests the following year.
By teaching robots social norms, researchers think the machines could more seamlessly interact with humans.
Adélie penguins in Antarctica nest in large colonies, and these groupings leave behind massive poop stains on the icy landscape — marks that are so large they can be tracked by satellites.
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