Broadcast Outage: We're investigating a broadcast transmission failure affecting the San Luis Valley from Antonito in the south to Salida in the north. We're working to resolve this issue. You can stream our live broadcast online or via the RMPBS+ App.

Stream live and on-demand content now on our new app:

RMPBS+

Donate

Help tell more stories in 2026 - make a year-end gift!

Eons show's poster

Science and Nature

TV-Y7

The Hazy Evolution of Cannabis

Join hosts Kallie Moore, Michelle Barboza-Ramirez, Gabriel Santos, and Blake de Pastino as they take you on a journey through the history of life on Earth. From the dawn of life in the Archaean Eon through the Mesozoic Era — the so-called “Age of Dinosaurs” -- right up to the end of the most recent Ice Age.

The Hazy Evolution of Cannabis

Season 6 Episode 18 | 10m 18s | CC

How did such a strange plant like cannabis come to be in the first place? When and where did we first domesticate it? And why oh why does it get us high?

share

Eons

Watch more episodes

When The Atlantic Ripped Open A Supercontinent

Did you know volcanoes created the Atlantic Ocean that we know today?

Why The Giraffe Got Its Neck

The giraffe's neck as made us reconsider our understanding of how evolution really works.

We Helped Make Mosquitoes A Problem

About 6,000 years ago, a lone female mosquito buzzed through the lush savannah in Africa.

Subscribe to Our Newsletters

Get trusted Colorado stories, programs, and events from Rocky Mountain PBS straight to your inbox.

Set Your Preferences >