Ice Sheet Time Machine
Unexplainable27 Aug 2025

Ice Sheet Time Machine

The US military carved a tiny city into the Greenland ice sheet. What they found, and lost, and found again, and what it tells us about climate change. Guests: Paul Bierman, geoscientist at the University of Vermont and author of When The Ice Is Gone; Richard Alley, geoscientist at the Pennsylvania State University 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 (and get ad-free episodes) by becoming a Vox Member today: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠vox.com/members Learn more about your ad choices. Visit podcastchoices.com/adchoices

Episoder(274)

A new way to listen

A new way to listen

We have an exciting announcement! Vox Members now get access to ad-free podcasts. If you sign up, you’ll get unlimited access to reporting on vox.com, exclusive newsletters, and all of our podcasts — ...

7 Apr 20252min

Intraterrestrials

Intraterrestrials

Deep inside the mud at the bottom of the ocean, scientists have found life that is so unusual they’ve had to create new branches on the tree of life to put it on. These life forms are not extraterrest...

2 Apr 202524min

How to talk to aliens

How to talk to aliens

Scientists have been searching for aliens for decades. But if we ever do get a signal someday, how will we communicate back? And will anyone out there be able to understand us? Guests: Doug Vakoch, p...

26 Mar 202524min

Good Robot #4: Who, me?

Good Robot #4: Who, me?

What can we actually do as our world gets populated with more and more robots? How can we take control? Can we take control? This is the final episode of our four-part series about the stories shapin...

22 Mar 202549min

Good Robot #3: Let’s fix everything

Good Robot #3: Let’s fix everything

A simple parable about a drowning child sparks a moral revolution. Is building AI the way to do the most good in the world? This is the third episode of our new four-part series about the stories sh...

19 Mar 202545min

Good Robot #2: Everything is not awesome

Good Robot #2: Everything is not awesome

When a robot does bad things, who is responsible? A group of technologists sounds the alarm about the ways AI is already harming us today. Are their concerns being taken seriously? This is the second ...

15 Mar 202553min

Good Robot #1: The magic intelligence in the sky

Good Robot #1: The magic intelligence in the sky

Before AI became a mainstream obsession, one thinker sounded the alarm about its catastrophic potential. So why are so many billionaires and tech leaders worried about… paper clips? This is the first ...

12 Mar 202549min

A strange signal from space

A strange signal from space

This week on Unexplainable or Not, the newest member of our team, Julia Longoria, tries to figure out which of three scientific mysteries about the sea, the land, and the sky has actually been solved....

5 Mar 202534min

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