Origins: How did Earth get its water?

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?” This is the
first episode in our new three-part series, Origins, about the
beginnings and boundaries of life on Earth. For more, go to
http://vox.com/unexplainable It’s a great place to view show
transcripts and read more about the topics on our show. Also, email
us! unexplainable@vox.com We read every email. Support
Unexplainable by making a financial contribution to Vox!
bit.ly/givepodcasts Learn more about your ad choices. Visit
podcastchoices.com/adchoices