How did Earth get its water?

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Life as we know it needs water, but scientists can’t figure out where Earth’s water came from. Answering that question is just one piece of an even bigger mystery: “Why are we here?” (Updated from 2023) For show transcripts, go to vox.com/unxtranscripts For more, go to vox.com/unexplainable Vox is also currently running a series called Home Planet, which is all about celebrating Earth in the face of climate change: vox.com/homeplanet And please email us! unexplainable@vox.com We read every email. Support Unexplainable by making a financial contribution to Vox: vox.com/givepodcasts Please take a second to help us learn more about you! vox.com/podcastsurvey Learn more about your ad choices. Visit podcastchoices.com/adchoices