This week on the channel +137M views this week

Mark Rober puts a foam-pit book break to the fun test

A Warner Bros. partnership sends him from reading to a roller coaster, with saliva samples along the way.

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Mark Rober Story of October 22, 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.

Can You Scientifically Measure Fun?

Reading in a foam pit doesn't sound like the obvious choice over a roller coaster. But in Mark Rober's "Can You Scientifically Measure Fun?", the book gets a surprisingly strong result.

The week's only new upload is a sponsored Short made with Warner Bros. Pictures for The Cat in the Hat. Rober tries reading, playing a board game with coworkers and riding a roller coaster, collecting saliva samples after each. He presents dopamine as an enjoyment signal and cortisol as a stress signal, then translates the results into happy faces on an "emotoscope." By the video's scoring, reading comes out on top: high enjoyment, low stress.

Rober also brings out bins of bouncy balls for a considerably messier experiment. Viewers have latched onto his enthusiastic warning before the blast, connecting it to a familiar Geometry Dash meme. Another comment raises a rather practical complication: making a mess is more fun when someone else handles the cleanup.

The Short reached roughly 322,000 views in its first fifteen hours. Among the channel's other uploads, "Last Cheater Standing Wins $10,000" continues drawing attention to the CrunchLabs Casino gathering, whose guests included Michael Reeves, Hank Green and Becky Stern. The older "I Discovered a Lost Plane" remains another active draw.

Across the channel, daily viewing is more than double its usual level, while the week brought about 300,000 new subscribers. Vsauce and NileRed are also seeing elevated daily viewing; Veritasium is running below its usual pace. Within this science-and-experiments group, Rober has both the largest subscriber audience and the biggest weekly view gain.

Published on Trari

Where next?

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A different discovery todayVideo people are talking about 11x its usual commentsZelenskyy tells Steven Bartlett why he needed "ammunition, not a ride"In a nearly two-hour conversation, Ukraine's president moves from sleepless nights and grieving parents to Bucha, Paddington Bear and the morning the invasion …Channel: The Diary Of A CEO · Story of October 24, 2026

What viewers say

That last one would be really fun, as long as I know I won't be the one cleaning up the mess.
That's been the hardest part for me as a mom. I'm constantly trying to find ways to let my kids have fun, but so many activities come at the cost of my own stress levels. XD
@faolan2174See it on YouTube
I have never heard anyone say “FIRE IN THE HOLE” with that much enthusiasm!
@Greggory-q2vSee it on YouTube
"Thats the neat part you can't" is the answer mark
@eithananz745See it on YouTube

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