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Some cynodonts may have been giving birth to live young much sooner in evolutionary history than previously assumed. A new Frontiers in Mammal Science study has offered the first compelling evidence that cynodonts may have been viviparous—a reproductive mode characterized by live birth.
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From the International Space Station, astronauts photographed Mount Hood and Mount Rainier as wildfire smoke spread across the Pacific Northwest in summer 2026.
New understanding of how nuclear fuel breaks down and changes in an operating nuclear reactor could help keep some reactors running longer, will inform the next generation of nuclear reactor fuel…
Almost all mammals give birth rather than laying eggs, and we have new clues about when they began to do so
Each year the Guardian runs a competition to find the invertebrate of the year. To find out more about the 2026 nominees science editor Ian Sample hears from climate reporter Petra Stock, environment…
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