Why are peas and corn classed as starches on food guides?
Hands-on Activities
Learn how test foods for starch.
Why do oil and water not mix?
Hands-on Activities
What chemistry determines how oil and water behave when mixed? Explore the mixing of oil and water and the density of liquids in this activity.
Why Do People Get Hangovers?
STEM Explained
Why does drinking too much alcohol make people feel so bad? Read about four theories.
Why Don't Fish Freeze in Cold Arctic Waters?
STEM Explained
Ever wonder how fish survive in the cold waters of the Arctic and Antarctic? It’s partly because of a brilliant evolutionary adaptation.
What is in blood?
Hands-on Activities
Make a model of blood and learn about the function of each of the parts that makes up blood.
What is the best way to clean up an oil spill?
Hands-on Activities
Learn about the properties of materials and the challenges of cleaning up an oil spill in this activity.
Temperature on Earth and on the ISS
Backgrounders
Temperature is an important part of life on Earth and life in space. This backgrounder explains what temperature is, how it affects people and how it is controlled on the International Space Station.
The Benefits of Going Outside
STEM Explained
Spending time outside has important physical and psychological benefits. It can even help you learn better!
The Immune Response
STEM Explained
When you cut your finger, your immune system kicks in to protect you from pathogens.
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.
Should We Eat Bugs?
STEM Explained
What's tasty, abundant and high in protein and vitamins? Bugs! Bugs feed about 2 billion people each day. They also hold promise for food security and sustainability.
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.
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!
Meringue: The Science Behind a Wonderfully Fluffy Dessert
STEM Explained
Learn about the biochemistry of cooking meringue.
My Stem Cell Donation Story
STEM Explained
In April 2016, Let’s Talk Science volunteer Daniel Tarade donated stem cells to help a person who needed a stem cell transplant to survive. Learn what stem cells are, how and why people donate, and what Daniel’s experience was like.