Humans
Expressive baby robot confirms why infants smile at their mums
An uncanny robot that mimics how young babies smile is giving insight into the behaviour's goal
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Feedback: A crafty trick that makes dinosaur from chick
Plus giant redwood defeats Wellington, a punny book of log graphs, another earworm, and more
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Earth
Endangered alien-like conch could be saved by stomach guest
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Earth
Bean beetle displays spiky penis before damaging sex
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Earth
Total eclipse glowing over icy pyramids wins photo prize
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Earth
Surfing seal rides on the back of a whale in surprise snapshot
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