Human Body

    The human body is an amazing thing. It is made up of various systems that work together to keep us breathing, eating, thinking, growing and playing. Find out more about everything from the brain in your head to the bones in your feet.

    Video thumbnail: Science Trek Heredity: Who are you?

    Science Trek

    Heredity: Who are you?

    Find out more about the science of genetics.

    Heredity: Who are you?

    Video thumbnail: Science Trek Sleep

    Science Trek

    Sleep

    What is sleep? Find out what happens when you go to bed and close your eyes.

    Sleep

    Video thumbnail: Science Trek D4K: Nervous System

    Science Trek

    D4K: Nervous System

    Learn how the nervous system works.

    D4K: Nervous System

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    Science Trek

    D4K: The Heart

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

    D4K: The Heart

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    Science Trek

    Blood

    Blood keeps you alive in more ways than one. Find out how in the Science Trek show.

    Blood

    Video thumbnail: Science Trek Muscles

    Science Trek

    Muscles

    Your muscles give your body shape and movement. Find out more about the muscular system.

    Muscles

    Video thumbnail: Science Trek D4K: Nutrition

    Science Trek

    D4K: Nutrition

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

    D4K: Nutrition

    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.

    D4K: Skeletons

    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.

    D4K: Sports Physiology

    Video thumbnail: Science Trek D4K: The Brain Show

    Science Trek

    D4K: The Brain Show

    Your brain is as powerful as it is mysterious.

    D4K: The Brain Show

    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

    D4K: Body Waste

    Video thumbnail: Science Trek D4K: Teeth

    Science Trek

    D4K: Teeth

    Why do good teeth and good health go together?

    D4K: Teeth

    Video thumbnail: Science Trek D4K: Hearing

    Science Trek

    D4K: Hearing

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

    D4K: Hearing

    Video thumbnail: Science Trek D4K: Viruses

    Science Trek

    D4K: Viruses

    How do viruses make you sick?

    D4K: Viruses

    Video thumbnail: Science Trek D4K: Eyes

    Science Trek

    D4K: Eyes

    Why do they call it an eye ball?

    D4K: Eyes

    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.

    D4K: Skin

    Video thumbnail: Science Trek Heredity: Genetic Detectives

    Science Trek

    Heredity: Genetic Detectives

    What is genetic counseling?

    Heredity: Genetic Detectives

    Video thumbnail: Science Trek The Brain: What's Inside Your Head

    Science Trek

    The Brain: What's Inside Your Head

    Find out what's inside your skull.

    The Brain: What's Inside Your Head

    Video thumbnail: Science Trek The Heart: Heart Basics

    Science Trek

    The Heart: Heart Basics

    Learn more about your heart.

    The Heart: Heart Basics

    Video thumbnail: Science Trek The Heart: Blood Basics

    Science Trek

    The Heart: Blood Basics

    Learn more about the blood your heart pumps.

    The Heart: Blood Basics

    Video thumbnail: Science Trek Digestive System

    Science Trek

    Digestive System

    It takes about 24 hours for food to make its way through your digestive system.

    Digestive System

    Video thumbnail: Science Trek Five Senses

    Science Trek

    Five Senses

    You learn about the world through your five senses. Find out how in this Science Trek.

    Five Senses

    Video thumbnail: Science Trek Sleep:  Why do we need it?

    Science Trek

    Sleep: Why do we need it?

    What is sleep? Find out what happens when you go to bed and close your eyes.

    Sleep: Why do we need it?