Human Body

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

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.

Spending time outside has important physical and psychological benefits. It can even help you learn better!

When you cut your finger, your immune system kicks in to protect you from pathogens.

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

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.

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

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.

Many doctors prescribe antibiotics to cure infections. But should they be prescribing viruses instead?

Get your hands cold for science and explore the topic of sensory adaptation.

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

Learn how e-cigarettes and other vaping products work, and why scientists and health professionals have concerns about their safety.

This backgrounder explains what light is, how it is measured, and how it affects people on Earth and astronauts on board the International Space Station.

Humidity is an important part of life on Earth and life in space. This backgrounder explains what humidity is, how it is measured and how it affects us both mentally and physically.

Make some fake snot and explore the function of mucus in this fun activity.