We Could Seed Alien Life Elsewhere in the Universe—But We’ll Never Undo the Devastating Consequences

Could humans spread Earth life beyond our planet? Astrobiologists explain where extremophiles might survive and why the risks ...
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Problem Solvers: Cattle Mutilations in Central and Eastern Oregon Remain a Mystery for Ranchers

Editor's note: This story contains descriptions and images of animal mutilation that some readers may find disturbing. HARNEY ...