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.

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我国法律明文规定禁止代孕。近年来,多部门多次联合开展打击代孕、非法应用辅助生殖技术专项行动。如2023年6月,国家卫生健康委、中央政法委等14部门联合开展为期半年的专项活动,严厉打击买卖精子卵子、代孕、伪造和买卖出生医学证明等违法犯罪行为。

New analysis of Apollo Moon samples finally settles debate: « For decades, scientists have argued whether the Moon had a strong or weak magnetic field during its early history (3.5 - 4 billion years ago). Now a new analysis shows that both sides of the debate are effectively correct. »

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