Skip to main content

Anatomy

Bread and wheat with a warning sign

Celiac Disease: When You Really Need to Stay Gluten-Free

STEM Explained

Celiac disease is an autoimmune disorder. Gluten triggers an immune system response, seriously affecting nutrition.

Doctor pointing to a knee x-ray

Why a Trip to Outer Space Could Be Bad for Your Bones

STEM Explained

Astronauts can experience bone loss in space. To understand why, you need to know a bit about how bones are formed and maintained in your body.

Suffering from a hangover

Why Do People Get Hangovers?

STEM Explained

Why does drinking too much alcohol make people feel so bad? Read about four theories.

Sound waves

What is Sound and How do we Hear it?

Backgrounders

Learn how sound travels in waves and how it is measured in this backgrounder.

Like trees, brains grow and develop

Understanding the Teen Brain

STEM Explained

Teen brain development prepares teens for adulthood, but also affects their emotions.

man sick with the flu

The Surprising Reason You Feel Awful When You're Sick

STEM Explained

Viruses can make you feel awful! This article explains how feeling bad might be your immune system’s way of helping you heal.

Former Canadian astronaut Robert Thirsk enjoys cycling on board the ISS

Spaceflight and Bone Loss

STEM Explained

Astronauts can experience bone loss in space. To understand why, you need to know a bit about how bones are formed and maintained in your body.

Replica of the earliest wooden model stethoscope

Stethoscope Replica

Interactives

Using stethoscopes, doctors can use sound waves to detect various health issues. Learn how this device has evolved since it was invented in 1816!

Smelling

Senses

Picture Collections

5 images representing the senses of hearing, seeing, smelling, tasting and touching

Down Syndrome karyotype

Meiosis Mistakes

STEM Explained

Errors during meiosis can alter the number of chromosomes in cells and lead to genetic disorders.

Students looking bored in class

Is There Too Much Carbon Dioxide in Your Classroom?

STEM Explained

Did you know that too much carbon dioxide in the classroom can affect your body, and even your grades?

How fast can you react?

How fast can you react?

Hands-on Activities

What is a reflex? Test your reaction time and find out why reflexes are important in this challenge activity.

How fast does a heart pump blood?

How fast does a heart pump blood?

Hands-on Activities

Get active in this activity and explore the impact of exercise on your heart rate. Ready, set, GO!

How much air do I breathe in?

How much air do I breathe in?

Hands-on Activities

Learn how to measure lung capacity and about the factors that can affect our lung capacity in this hands on activity.

Image © exdez, iStockPhoto.com

How Can Your Doctor Use the Data in You?

STEM Explained

Scientists are training artificial intelligence to diagnose injuries using x-rays and other medical imagery of you (and millions of others). What improvements and other changes might this bring to the health care system?