Spending time in zero gravity could hinder human growth - if we are anything like newts, that is.rnEduardo Almeida of NASA's Ames Research Center in Mountain View, California, and his team cut the tails off 16 newts (Pleurodeles waltl) before sending them into space. While the tails did regrow, as they do on Earth, they were less than half as long as normal.rn"This is important evidence that regeneration does not occur at a normal rate in space," says Almeida, who presented the results at the American Society for Cell Biology meeting in San Francisco last month.
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