Dogs act like toddlers when you need help - but cats just watch. Scientists compared 3 groups: pet dogs, cats, and human toddlers in an experiment where a human parent hides and pretends to look for an object. 75% of dogs and children helped. Cats only helped if it was in their personal interest.

· · 来源:tutorial资讯

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Now, industrial designer Paul Staal has flipped the script with a working desktop PC that's a supersized homage to the classic computer brick (via Reddit and Hackster.io).

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Four arres