Astronomy/Roen Kelly Life is resilient. The first living things on Earth appeared as far back as 4 billion years ago, according to some scientists. At the time, our planet was still being pummeled by huge space rocks. But life persisted anyway. And throughout Earth’s history, it’s seen all manner of cataclysms. Disparate doomsdays — fromContinue reading “How will life on Earth end?”

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