Season 5

Video thumbnail: Be Smart 20 MILLION Year-Old Spider!! Unweaving Spider Silk 🕷

Be Smart

20 MILLION Year-Old Spider!! Unweaving Spider Silk 🕷

Spider silk is as strong, stretchy, and resilient as even humans’ most advanced creations.

20 MILLION Year-Old Spider!! Unweaving Spider Silk 🕷

Video thumbnail: Be Smart Inside an ICE CAVE! - Nature's Most Beautiful Blue

Be Smart

Inside an ICE CAVE! - Nature's Most Beautiful Blue

Where do glaciers and icebergs get their beautiful blue color?

Inside an ICE CAVE! - Nature's Most Beautiful Blue

Video thumbnail: Be Smart The Romantic Lure of Moonlight

Be Smart

The Romantic Lure of Moonlight

Many animals use moonlight and Earth’s lunar cycle to run their biological clock.

The Romantic Lure of Moonlight

Video thumbnail: Be Smart Asteroid Mining: Our Ticket To Living Off Earth?

Be Smart

Asteroid Mining: Our Ticket To Living Off Earth?

Space rocks might be our ticket to building space colonies!

Asteroid Mining: Our Ticket To Living Off Earth?

Video thumbnail: Be Smart Should You Eat Everyday?

Be Smart

Should You Eat Everyday?

A look at the science behind intermittent fasting.

Should You Eat Everyday?

Video thumbnail: Be Smart The Cheerios Effect

Be Smart

The Cheerios Effect

Who knew there was so much science in a bowl of cereal?

The Cheerios Effect

Video thumbnail: Be Smart Doomsday Machines

Be Smart

Doomsday Machines

Nuclear weapons represent the darker side of E=mc^2.

Doomsday Machines