
Alun and the Moulin
Clip: Season 2026 | 2m 22sVideo has Closed Captions
Glaciologist Alun Hubbard stands at the edge of a perilous moulin on the Greenland ice sheet.
The opening moments of “Ages of Ice” take viewers to the edge of one of Greenland’s spectacular “moulins” or sinkholes in the ice where roaring waterfalls of meltwater disappear deep below. Skirting the edge, glaciologist Professor Alun Hubbard stands at the chasm and sets the stage for an extraordinary journey into the rapidly changing polar regions
Problems playing video? | Closed Captioning Feedback
Problems playing video? | Closed Captioning Feedback

Alun and the Moulin
Clip: Season 2026 | 2m 22sVideo has Closed Captions
The opening moments of “Ages of Ice” take viewers to the edge of one of Greenland’s spectacular “moulins” or sinkholes in the ice where roaring waterfalls of meltwater disappear deep below. Skirting the edge, glaciologist Professor Alun Hubbard stands at the chasm and sets the stage for an extraordinary journey into the rapidly changing polar regions
Problems playing video? | Closed Captioning Feedback
Where to Watch Ages of Ice
Ages of Ice is available to stream on pbs.org and the PBS app.
♪ Well see how small this little river is right.
I've got to keep a straight face here because obviously I'm having a little bit of a jolly, but you never know.
I mean, if you don't have a look-see and make the measurements and see what's going on there.
♪ Its crazy.
Got my hard hat on.
Health ands safety.
Oh, that's quite a big boy.
Its nuts.
It is a big black hole, and it is frightening and intimidating.
The adventurous side of me that just wants to go in there and have a look and see what the hell is happening.
That's really beautiful.
I think that this is just melt water plummeting into the ice sheet.
Really see the stratification and structure in the ice.
I mean, it goes hundreds of meters down, but you can see beautifully.
And there's light ice and dark ice and dust layers.
And that's like a chronology as you go down each layer will be an annual layer.
It's very cool.
♪ Singing in the rain ♪ ♪ Just singing in the rain ♪ ♪ What a glorious feeling ♪ ♪♪ Im hap-hap-happy again ♪
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Preview: S2026 | 4m 54s | Go behind the scenes of the epic three-year journey to film “Ages of Ice.” (4m 54s)
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Preview: S2026 | 1m 27s | Discover epic science in the most extreme places on Earth. (1m 27s)
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Preview: S2026 | 3m 59s | The polar regions are places of wonder and profound connection for the scientists who work there. (3m 59s)
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Clip: S2026 | 2m 22s | Glaciologist Alun Hubbard stands at the edge of a perilous moulin on the Greenland ice sheet. (2m 22s)
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Clip: Ep3 | 3m 39s | Austrian scientist Dr. Birgit Sattler studies the microbial life that exists in ice. (3m 39s)
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Clip: Ep3 | 3m 54s | On Antarctica’s barren nunatuks, Dr. Ry Holland searches for microbial life. (3m 54s)
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Clip: Ep2 | 3m 58s | The team from Real Ice work with the Inuit community on a radical plan to refreeze sea ice. (3m 58s)
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Clip: Ep2 | 2m 18s | Dr. Melanie Lancaster is a marine mammal specialist and advocate for quiet Arctic oceans. (2m 18s)
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Clip: Ep1 | 4m 48s | Dr. Adrian McCallum and his team traverse the Greenland ice sheet on a 350 mile journey. (4m 48s)
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Clip: Ep1 | 4m 58s | Professor Alun Hubbard is studying the cause of meltwater on the Greenland ice sheet. (4m 58s)
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