This week on the channel +1.3M views this week

Europe's vanishing mammals give PBS Eons an extinction mystery

Two new uploads pair an Eocene-Oligocene explainer with a four-host National Fossil Day livestream.

Channel:

PBS Eons Story of October 17, 2026Trari Newsroom

Why this story? The channel's weekly summary: what went up this week, what is drawing views now, and where the channel stands among similar channels.

The Biggest Extinction You’ve Never Heard Of

European mammals disappear from the fossil record, and mammals native to Asia take their place. That striking change supplies the starting puzzle for PBS Eons' "The Biggest Extinction You've Never Heard Of," the channel's most-watched new upload this week, with roughly 614,000 views.

The episode explores the Eocene-Oligocene extinction, a major upheaval after the age of dinosaurs that put our primate ancestors under severe pressure. It is exactly the sort of gap in familiar prehistory that Eons likes to investigate: not the famous dinosaur-ending catastrophe, but another consequential chapter beyond it.

Viewers have their own follow-up syllabus forming. Several ask about extinct tooth types, while another imagines using ancient interior seaways for fictional worldbuilding. Others want more attention paid to the stretch of mammal history between the dinosaurs and the Ice Age.

The week's other upload, "National Fossil Day 2026," brings Kallie Moore, Blake de Pastino, Michelle Barboza-Ramirez and Gabriel Santos together for a livestream. Its natural-history agenda ranges from fossil smuggling and the Montana Dinosaur Trail to a particularly specific accuracy check: dinosaurs on Magic: The Gathering cards.

Across the channel, daily views are running at more than twice their usual level, while the subscriber count stayed unchanged over the week. The extinction explainer is the busiest upload right now, followed by the livestream. September's "Did the Ozone Collapse 252 Million Years Ago?" also continues drawing viewers, keeping the Great Dying's damaged plants and possible ozone disruption on Eons' reading list.

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Where next?

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What viewers say

All those interior sea ways would be so cool for worldbuilding
@n0bl3hunt3rSee it on YouTube
Tooth types!?!😮 Please make a video about extinct tooth types! Never heard of it, so interesting. Thank you for all you guys' great work!!♡
@professional.daydreamerSee it on YouTube
Great, now I want to see a _Walking with Beasts_ successor featuring this extinction.
@primrosevale1995See it on YouTube

3 more comments

I'm very curious about the extinction of different tooth types, never heard of it! Imagine what the world would look like if they hadn't gone extinct
@professional.daydreamerSee it on YouTube
Interesting to learn about these other extinctions
@nebulanSee it on YouTube
WOW! The Ocean Current Animation at 10:11 is awesome! where can I watch more of that?
@TheMaskedGamerSee it on YouTube

Public comments from the video's page on YouTube