There's an old story scientists tell about human ovaries: that they are ticking clocks that only lose eggs, never gain them. Now that story might be changing, opening the door to new treatments for infertility and menopause.
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Can ovaries make new eggs?

Unexplainable takes listeners right up to the edge of what we know ... and then keeps right on going. This Vox podcast explores scientific mysteries, unanswered questions, and all the things we learn by diving into the unknown. New episodes every Wednesday.

Natural Sciences

Science & Medicine

Science

Life Sciences

Way back when forests first evolved on Earth … they might have triggered one of the biggest mass extinctions in the history of the planet. What can we learn from this ancient climate apocalypse?
For show transcripts, go to vox.com/unxtranscripts
For more, go to vox.com/unexplainable
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Did trees kill the world?

From blood transfusions to enzyme boosters, our friends at Science Vs dive into the latest research on the search for the fountain of youth.
For show transcripts, go to vox.com/unxtranscripts
For more, go to vox.com/unexplainable
And please email us! unexplainable@vox.com
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Can we stop aging?

A snake. A ray. A shark. They each got pregnant with no male involved. In fact, scientists are finding more and more species that can reproduce on their own. What’s going on?
For show transcripts, go to vox.com/unxtranscripts
For more, go to vox.com/unexplainable
And please email us! unexplainable@vox.com
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Who's the daddy? There isn't one.

Itch used to be understood as a mild form of pain, but scientists are learning this sense is more than just skin deep. How deep does it go?
For show transcripts, go to vox.com/unxtranscripts
For more, go to vox.com/unexplainable
And please email us! unexplainable@vox.com
We read every email.
Support Unexplainable by making a financial contribution to Vox: vox.com/givepodcasts
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Itch hunt

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
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Can ovaries make new eggs?

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