

Who's the daddy? There isn't one.
A snake. A shark. They 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? Note: We mention that a stingray named Charlotte might be pregnant via parthenogenesis. It has since been announced that she was not pregnant, but ill. For…
We score an episode from what we can actually measure — its reach and engagement, what listeners say about it, and what it covers. We don't have those signals for this one yet, so it doesn't get a number.
Buzzmeter says it's buzzing across platforms — the Hive Vote says whether the people who actually listened liked it.
Rate this episode
Add your vote to the Hive — listeners rate every episode after they finish.
- No reviews yet — be the first.
Similar episodes from other shows
More like Unexplainable →
No sperm? No problem.

The quest for the perfect baby

A mouse with two dads — and a new frontier for biology | Katsuhiko Hayashi

Mice with two dads; perfect your sleep with science; how lizards survived dinosaur-killing asteroid
One great episode in your inbox, daily — free.
One email a day, unsubscribe anytime. No spam, ever.