Unexplainable

In 2017, researchers published an explosive finding: Sperm counts may be declining in some countries around the world. Media outlets began worrying about a potential Spermageddon, but other researchers have pumped the brakes. Because scientists know surprisingly little about sperm. Also, Noam created a list on the Hark podcast app where he talked about some of his favorite bitesize moments of the...

Scientists are closer than ever to harnessing fusion power — the same process that powers the sun — by essentially making a small star here on Earth. Fusion could give humanity its best shot at solving the climate crisis, but the technology has yet to be perfected and would require billions more in investments. Is it worth the bet? For more, go to http://vox.com/unexplainable It’s a great place to...

Noam wrote an end-of-year song with Today, Explained host Sean Rameswaram, so we thought to drop it here as a little end-of-year surprise. Lyrics: 2021, it was gonna be fun Get a couple shots and then you’re done Then the second the year’d begun We had an insurrection 2021, it was gonna be fun Get a couple shots and then you’re done Then the second the year’d begun We had an insurrection Yeah it w...

Most of the matter in the universe is dark matter, an invisible, untouchable, mysterious substance. Scientists don’t know what exactly dark matter is, despite decades of searching. But recently, they got a new clue in the form of an extremely tiny dancer. This episode is a remix of two prior episodes of Unexplainable, which has been airing on broadcast radio through a partnership with American Pub...

How can we solve the problem of ocean plastic if we don’t know where most of the plastic is? 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 choic...

Until 1993, many researchers excluded women from clinical drug trials, leaving doctors in the dark about how new treatments work in more than half the population. This is the story of why that happened, the women who fought to change it, and what we still don’t know about how sex and gender affect health. For more, go to http://vox.com/unexplainable It’s a great place to view show transcripts and...

Venus is the hottest, scariest planet in the solar system, but billions of years ago it may have been a lot like Earth, complete with an ocean of water. So, what killed Venus? And could Earth be next? 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...

Will scientists ever fully understand the human brain? In their quest for knowledge, they’ve tried knives, magnets, computers, blood, and even a good metaphor. 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 cont...

Slime molds can navigate mazes, control robots, and make complicated decisions, all without a central nervous system. If this weird gooey blob can think, does that mean scientists are thinking about intelligence all wrong? 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 rea...

Every year, thousands of marine mammals end up trapped on beaches, but it’s often hard to figure out why. It’s even harder to figure out how much humans are to blame. For more, go to http://vox.com/unexplainable It’s a great place to sign up for our newsletter, view show transcripts, and read more about the topics on our show. Also, email us! unexplainable@vox.com We read every email. Support Unex...

Why do so many people think they can see and hear ghosts, and what does that say about our conscious experience of the world? For more, go to http://vox.com/unexplainable It’s a great place to sign up for our newsletter, 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 contribut...

A recent study of tens of thousands of birds has shown that birds are growing smaller over time. It could be due to climate change, and if so, we ought to consider: How else might humans be altering the literal shape of life on Earth — now and in the future? For more, go to http://vox.com/unexplainable It’s a great place to sign up for our newsletter, view show transcripts, and read more about the...

The Nobel Prize has rewarded some amazing discoveries. It’s also contributed to scientific tunnel vision. This week, how the Nobel impacted our understanding of an enormous cosmic mystery, and what a new and improved Nobel Prize could look like. For more, go to http://vox.com/unexplainable It’s a great place to sign up for our newsletter, view show transcripts, and read more about the topics on ou...

To look into deep space is to look back in time. With the upcoming launch of the James Webb Space Telescope, scientists hope to see “cosmic dawn,” a period long ago when the first starlight transformed the universe. But what happened before cosmic dawn? The Webb can’t tell us, though future telescopes could. For more, go to http://vox.com/unexplainable It’s a great place to sign up for our newslet...

After decades of planning, NASA is finally (finally!) set to launch the successor to the Hubble. The new Webb telescope will be a paradigm shift for astronomy, exploring places in the cosmos that have been completely invisible to us until now. But first, it has to safely reach a point nearly a million miles away from the Earth. For more, go to http://vox.com/unexplainable It’s a great place to sig...

For decades, Alzheimer’s researchers have been stubbornly pursuing a single theory, but they’re starting to wonder: is this narrow focus the reason we still don’t have a cure? For more, go to http://vox.com/unexplainable It’s a great place to sign up for our newsletter, view show transcripts, and read more about the topics on our show. Also, email us! unexplainable@vox.com We read every email. Sup...

Several years after US diplomats in Cuba claimed they were attacked by an invisible weapon, similar incidents continue to be reported around the world. Scientists haven’t been able to determine a definitive cause, but the possibilities point toward something just as mysterious as the illness itself: the inner workings of the human brain. For more, go to http://vox.com/unexplainable It’s a great pl...

Once upon a time, there were no anuses. These ingenious organs allowed our primordial ancestors to grow bigger and more complex, but scientists still don’t understand how they evolved. And they’re still grasping at a mystery that literally surrounds it: Why is the human butt so big? For more go to http://vox.com/unexplainable It's a great place to sign up for our newsletter, view show transcripts,...

This common chronic condition — where tissue similar to what grows inside the uterus grows elsewhere in the body — is barely understood. So why is a condition so prevalent and painful still so unknown? It has a lot to do with who gets to ask research questions. Correction, August 18: An earlier version of this episode implied that the tissue involved in endometriosis is the same as the endometrium...

Two scientists. A billion-dollar wager. One unanswered question: Is the first human who will live to 150 already alive? The technology to make that happen may already be in development. But if it works, there will be new, unsettling questions for humankind to answer. For more, go to http://vox.com/unexplainable It’s a great place to sign up for our newsletter, view show transcripts, and read more...

Earlier this year, Nicole Yamase explored the bottom of the Challenger Deep, the deepest place in the ocean, where few people have ever been. The rest of the seafloor is almost as mysterious — 80 percent remains unmapped — but the few glimpses scientists have gotten have completely revolutionized our understanding of the planet. For more, go to http://vox.com/unexplainable It’s a great place to si...

8 minutes, 24 seconds. That’s the average amount of warning time people get before a tornado touches down. To do better, and to understand tornadoes, scientists need to confront more of these storms, head on. For a clean version of this episode and more, go to http://vox.com/unexplainable It’s a great place to sign up for our newsletter, view show transcripts, and read more about the topics on our...

Astronauts left something on the moon that could help unlock the origins of life itself. For more, go to http://vox.com/unexplainable It’s a great place to sign up for our newsletter, view show transcripts, and read more about the topics on our show. Also, email us! unexplainable@vox.com We read every email. We are conducting an audience survey to better serve you. It takes about five minutes, and...

An accidental discovery on a nighttime walk led one scientist and his team to wonder: How many mammals glow under ultraviolet light? The list keeps growing, but scientists still aren’t sure why these furry creatures glow. For more, go to http://vox.com/unexplainable It’s a great place to sign up for our newsletter, view show transcripts, and read more about the topics on our show. Email us at unex...

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. Using this tool, scientists eventually transformed our understanding of the universe. They realized space was expanding, that this expansion was accelerating, and that ultimately, everything will end. For more, go to http://vox.com/unexpla...