New findings a ‘complete reversal’ in understanding why Earth became hospitable to life and its ‘twin’ didn’t

Venus may be a sweltering wasteland today, but scientists have questioned whether the planet was always so inhospitable. While previous...

What’s happening in Ukraine right now? CNN’s international correspondent reports

With roughly 150,000 Russian troops surrounding Ukraine, Kharkiv's opera house choir took their national anthem to heart: "Ukraine's glory has...

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