![Science Trek](https://image.pbs.org/contentchannels/uR88rxa-white-logo-41-zGZrjQE.png?format=webp&resize=200x)
D4K: The Heart Video Short
Clip: Special | 2m 14sVideo has Closed Captions
How does your heart work?
A long time ago, people used to think your heart, not your brain, ran your body. Today, we know that your heart is the core of your body’s circulatory system. Find out more about your heart and how it pumps to keep you alive.
Science Trek is a local public television program presented by IdahoPTV
The Laura Moore Cunningham Foundation
![Science Trek](https://image.pbs.org/contentchannels/uR88rxa-white-logo-41-zGZrjQE.png?format=webp&resize=200x)
D4K: The Heart Video Short
Clip: Special | 2m 14sVideo has Closed Captions
A long time ago, people used to think your heart, not your brain, ran your body. Today, we know that your heart is the core of your body’s circulatory system. Find out more about your heart and how it pumps to keep you alive.
How to Watch Science Trek
Science Trek is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV, Amazon Fire Tablet, Roku, Samsung Smart TV, and Vizio.
![Science Trek](https://image.pbs.org/curate/2bc984e5-101b-457d-b711-13c3a3043211.jpg?format=webp&resize=860x)
Science Trek
Science Trek is a place where parents, kids, and educators can watch short, educational videos on a variety of science topics. Every Monday Science Trek releases a new video that introduces children to math, science, technology, engineering, and math (STEM) career potentials in a fun, informative way.Science Trek is a local public television program presented by IdahoPTV
The Laura Moore Cunningham Foundation