As the U. S. celebrates its Semiquincentennial, we can recognize its problems and still raise a glass—and history shows us why.
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Dark matter is often portrayed as a cosmic loner, interacting with itself and the rest of the universe only through gravity. But what if dark matter particles also exert a hidden force on one another?
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The pair is expected to leave the nest in early July. The post Sandy and Luna venture out of the nest before fledging appeared first on Popular Science .
Jackery's Prime Day deals are live, with solar generators and portable power stations up to 50% off. The post Jackery’s Prime Day deals are live, with solar generators and portable power stations up to 50% off appeared first on Popular Science .