Science News Roundup: Japanese researchers build a robotic tail to keep elderly upright

Following is a summary of current science news briefs.

Japanese researchers build a robotic tail to keep elderly upright

Millions of years after the ancestors of humans evolved to lose their tails, a research team at Japan's Keio University have built a robotic one they say could help unsteady elderly people keep their balance. Dubbed Arque, the grey one-meter device mimics tails such as those of cheetahs and other animals used to keep their balance while running and climbing, according to the Keio team.

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