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：miilosc资讯

The remains of a few men have been found - who were they? And some children too - were they related to any of the women?

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Increased burning of fossil fuels like coal and oil over the last two centuries has released greenhouse gases like CO2 into the atmosphere, which have warmed our planet.

[ITmedia M

Reporting from, 台北