Science Trek

D4K: Eyes

Special | 28m 54s

Your eyes are your windows to the world. Four fifths of all information received from our brain comes through our eyes. Experts answer students’ questions about how your eye work.

Aired: 09/21/04

Rating: TV-G

Video has closed captioning.

Problems Playing Video?

Closed Captioning

The Laura Moore Cunningham Foundation

More Specials

Video thumbnail: Science Trek Mountain Goats: Kids, Nannies and Billies

Science Trek

Mountain Goats: Kids, Nannies and Billies

Mountain Goats aren't goats. What are they?

Special | 5m 35s

Mountain Goats: Kids, Nannies and Billies

Special | 5m 35s

Video thumbnail: Science Trek Mountain Goats: How to Count Mountain Goats

Science Trek

Mountain Goats: How to Count Mountain Goats

Why count mountain goats?

Special | 5m 9s

Mountain Goats: How to Count Mountain Goats

Special | 5m 9s

Video thumbnail: Science Trek Magnets: It's Electric!

Science Trek

Magnets: It's Electric!

Magnets play an important role in making electricity.

Special | 4m 34s

Magnets: It's Electric!

Special | 4m 34s

Video thumbnail: Science Trek Magnets: An Invisible Force

Science Trek

Magnets: An Invisible Force

Find out more about this force of nature.

Special | 4m 55s

Magnets: An Invisible Force

Special | 4m 55s

Video thumbnail: Science Trek Hearing: How Your Ears Work

Science Trek

Hearing: How Your Ears Work

How do your ears work?

Special | 4m 36s

Hearing: How Your Ears Work

Special | 4m 36s

Video thumbnail: Science Trek The Moon: Explore The Moon

Science Trek

The Moon: Explore The Moon

Learn more about the Earth's only natural satellite.

Special | 5m 15s

The Moon: Explore The Moon

Special | 5m 15s

Video thumbnail: Science Trek Inventions: Need a Light? Try Science.

Science Trek

Inventions: Need a Light? Try Science.

What is the Scientific Method?

Special | 5m 5s

Inventions: Need a Light? Try Science.

Special | 5m 5s

Video thumbnail: Science Trek Inventions: Goldfish® or M&Ms ® ?

Science Trek

Inventions: Goldfish® or M&Ms ® ?

How do you find the perfect cupcake topping?

Special | 5m 45s

Inventions: Goldfish® or M&Ms ® ?

Special | 5m 45s

Video thumbnail: Science Trek Bees: Honey and Smoke

Science Trek

Bees: Honey and Smoke

Learn about being a beekeeper.

Special | 4m 44s

Bees: Honey and Smoke

Special | 4m 44s

Video thumbnail: Science Trek Bees: What's the Buzz About Bees?

Science Trek

Bees: What's the Buzz About Bees?

Why do we need bees?

Special | 5m 26s

Bees: What's the Buzz About Bees?

Special | 5m 26s

Video thumbnail: Science Trek Sound: Without Sound

Science Trek

Sound: Without Sound

What does sound mean to someone who is deaf?

Special | 5m 46s

Sound: Without Sound

Special | 5m 46s

Video thumbnail: Science Trek Sound: The Science of Sound

Science Trek

Sound: The Science of Sound

Sound is energy!

Special | 4m 2s

Sound: The Science of Sound

Special | 4m 2s

See All Specials

Extras From This Special

Video thumbnail: Science Trek D4K: Eyes Video Short

Science Trek

D4K: Eyes Video Short

Learn how your eyes see the world.

Clip: Special | 2m 42s

D4K: Eyes Video Short

Clip: Special | 2m 42s

See All Extras

More From This Collection

Video thumbnail: Science Trek D4K: Skin

Science Trek

D4K: Skin

Beauty may be only skin deep, but your skin does more than make you pretty. Find out.

Special | 28m 49s

D4K: Skin

Special | 28m 49s

Video thumbnail: Science Trek D4K: The Heart

Science Trek

D4K: The Heart

Why is the heart one of the most amazing “machines” in the world?

Special | 29m 5s

D4K: The Heart

Special | 29m 5s

Video thumbnail: Science Trek D4K: Viruses

Science Trek

D4K: Viruses

How do viruses make you sick?

Special | 28m 48s

D4K: Viruses

Special | 28m 48s

Video thumbnail: Science Trek D4K: Hearing

Science Trek

D4K: Hearing

What is the connection between your ears and being able to stand upright?

Special | 28m 49s

D4K: Hearing

Special | 28m 49s

Video thumbnail: Science Trek D4K: Teeth

Science Trek

D4K: Teeth

Why do good teeth and good health go together?

Special | 28m 49s

D4K: Teeth

Special | 28m 49s

Video thumbnail: Science Trek D4K: Body Waste

Science Trek

D4K: Body Waste

A complex set of glands, organs, and processes help remove waste materials from our bodies

Special | 28m 47s

D4K: Body Waste

Special | 28m 47s

Video thumbnail: Science Trek D4K: The Brain Show

Science Trek

D4K: The Brain Show

Your brain is as powerful as it is mysterious.

Special | 28m 52s

D4K: The Brain Show

Special | 28m 52s

Video thumbnail: Science Trek D4K: Sports Physiology

Science Trek

D4K: Sports Physiology

Learn how scientists can improve an athlete’s performance and help prevent injuries.

Special | 28m 49s

D4K: Sports Physiology

Special | 28m 49s

Video thumbnail: Science Trek D4K: Skeletons

Science Trek

D4K: Skeletons

Your body is made up of 206 different bones. Find out more about your skeletal system.

Special | 28m 43s

D4K: Skeletons

Special | 28m 43s

Video thumbnail: Science Trek D4K: Nervous System

Science Trek

D4K: Nervous System

Learn how the nervous system works.

Special | 28m 49s

D4K: Nervous System

Special | 28m 49s

Video thumbnail: Science Trek D4K: Nutrition

Science Trek

D4K: Nutrition

Watch the “Nutrition Challenge” and learn more about eating right on this D4K.

Special | 28m 49s

D4K: Nutrition

Special | 28m 49s

See All
Science Trek

YouTube Channel

Science Trek

Subscribe

You Might Also Like

Nature
NOVA
Life from Above
Wild Metropolis
Animal Babies: First Year on Earth
Secrets of the Dead