America has what might be the best evidence for life on Mars. NASA’s Perseverance rover has gathered rock samples that could contain compelling biosignatures of ancient microbial life. No one is quite sure yet, and the samples need to be tested in a lab before we can conclusively prove that our distant neighbor once harbored life. Too bad. We’re never going to see the results. In January, funding for the project was canceled. Donald Trump has other plans for the red planet.
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