54:34

Everything You Need To Know About Climate Change

14:49

I Have Crohn's Disease

09:53

We Built This Treehouse To Block an Oil Pipeline

05:12

Why You Can't Boycott Amazon (and shouldn't even try)

26:28

Facing the Climate Emergency (ft. Margaret Klein Salamon)

25:09

The Climate Leader Canada Needs (feat. Amita Kuttner)

03:53

After 7 Days of Living in a Tree... I'm Coming Down (Day 7)

05:08

Your Voice, and How to Use It (Day 6)

08:14

My Message to the Oil and Gas Workers I'm Blocking (Day 5)

06:07

Here’s Why I’m Blocking a Pipeline With My Body (Day 4)

12:18

Answering Your Questions While Living in a Tree (Day 3)

12:34

I Dropped My Phone While Living 20m Up a Tree (Day 2)

08:39

I Could Get Arrested For Occupying This Tree (Day 1)

11:48

My Carbon Footprint is Broken

12:42

Living with Climate Grief (ft. @ClimateAdam)

10:58

This is what our climate change denial looks like.

10:35

How YouTube Created 'Flat Earth'

03:25

This Channel Has to Change. Here's Why.

05:41

You Eat Plastic Every Day. Here's How To Avoid It.

11:52

I Spent 7 Days Upside-Down

05:41

We Saved One Million Trees in the Amazon.

10:09

I Learned to Tell Time by the Moon. Here's Why It Was Hard.

11:06

Should We Block Out The Sun to Solve Climate Change?

07:58

I was a Full-Time YouTuber with 246 Subscribers

06:15

How I Went Zero Waste in 90 Days

06:34

Watch The World Turn

04:50

28 Hours With a Pendulum | What I'm Working On

08:31

I Went 24hrs Without Touching Plastic. This is What Happened.

02:39

Tom Scott's Literal Subscriber Flood

03:37

Zero Waste | What I'm Working On

18:51

Our Place in Space

09:30

Human History in a Marathon

05:44

I Risked My Life So You Could See This: Part Three

08:08

What Went Wrong In My Homemade Biodome: Part Two

04:26

I Sealed Myself in a Jar: Part One

03:50

The Plants That Will Keep Me Alive

03:09

#KurtisInAJar | What I'm Working On

08:03

I Built a Lightning Flute!

04:34

Lightning Flute | What I'm Working On

12:50

How I Proved the Earth is Round (with my Bike and Two Sticks)

08:08

Measuring Earth | What I'm Working On

02:51

I Am Now On Patreon!

07:36

How Tracking My Life Changed Everything

06:49

You Can Water This Cactus!

04:56

Is it Time to Give Up On Daylight Saving Time?

07:39

Genetics is a Piece of Cake

10:00

How a Biologist Builds a Digital Camera

13:22

History of The Universe in 13,799 Dominoes

03:59

2000 Dominoes as 2000 Million Years

05:34

12 Facts About Poo

06:20

The Himalayan Mountains: How They Formed

05:18

Is There a Scientific Consensus on Climate Change?

03:50

Sundials = Astronomy with a Stick!

05:34

Exactly How Fast Do Shoes Get Worn Out?

07:33

5 Ways We Just Didn’t Evolve for This (Mismatch Diseases)

07:02

What is Sedimentary Rock?

09:11

How to Teach Yourself Anything

03:56

Plants in a Jar Test the Conservation of Mass

05:55

Why Lichen Rock!

06:16

An Ancient Riverbed in the Desert?