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.

Life Sciences
Natural Sciences
What's so funny?
Scientists are digging into what makes something funny.
16 min
Origins: The meaning of “life”
For every definition of life, there’s a creature that sends us right back to the drawing board.
23 min
Origins: The first living thing
How did life on Earth start?
25 min
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.
23 min
What is love?
Can science help us predict whether a relationship will succeed?
30 min
Why we hiccup
Listeners told us that eating baby carrots or telling lies can bring on the hiccups. Burping or kissing can make them stop. Um, what?
27 min
We booped an asteroid
Last fall, a NASA spacecraft slammed into an asteroid to test a way to avert a disaster on Earth. So are we safe now?
20 min
Your creepy, crawly roommates
Our houses are homes to hidden worlds of bugs.
24 min
Henrietta Leavitt and the end of the universe
In the early 1900s, Henrietta Leavitt made one of the most important discoveries in the history of astronomy: a yardstick to measure distances to faraway stars.
29 min
Plants with eyes?
In the temperate rainforests of Chile, there is a vine that can shapeshift to copy the look of other plants.
24 min
Unexplainable or Not: Bikes, planes, ice skates
Our game show is back!
27 min
Your gut's feelings
How we feel emotionally may be influenced by unseen troves of microbial life that live inside us. Is it possible to harness this gut power?
26 min
Nuclear fusion breaks through
Back in January, we spoke to a scientist at the National Ignition Facility about how close they were to achieving what’s been called “one of the most impressive scientific feats of the 21st century.”
28 min
Basic instinct
How do animals know how to do things like spin a web or build a dam? A neuroscientist argues it's not “instinct.” Something bigger is going on.
26 min
Why we cry
Humans seem to be the only animals that cry from emotion. What makes our tears so special?
21 min
Can we live in space?
NASA just launched the Artemis program, a series of missions that will eventually take humans back to the moon, and beyond.
29 min
Holding on to power
A mountain, a tower, a thermos full of molten salt: These are the batteries that could power our renewable future.
28 min
Redefining death
Death used to be fairly self-evident, but new technologies have forced us to ask: When is someone actually dead?
30 min
Talking to ghosts
Why do so many people think they can see and hear ghosts, and what does that say about our conscious experience of the world?
29 min
Why is everyone getting food allergies?
In the past few decades, the rate of food allergies in both children and adults has dramatically increased.
23 min
Introducing The Gray Area
On the first episode of Vox’s new podcast, The Gray Area, host Sean Illing talks with Neil deGrasse Tyson about the limits of both politics and science.
54 min
Let’s play Unexplainable or Not
For the first time, we get some answers.
26 min
The math problem that could break the internet
Today's internet is built on a series of locks and keys that protect your private information as it travels through cyberspace. But could all these locks be broken?
35 min
Jumping the gun
At the 2022 World Athletics Championships, sprinter TyNia Gaither was disqualified for false starting ... after the gun went off.
30 min
An Alzheimer's uproar
This past July, a bombshell report in Science magazine suggested that a key Alzheimer’s study might have contained manipulated evidence.
34 min