Big Idea: Organ systems have complex interrelationships to maintain homeostasis

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.

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

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

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

Put on your running shoes and sharpen your pencil! Investigate the mathematical connection between work and power in this hands-on activity.

Snake venom can be dangerous for your circulatory system, nervous system or muscular system. But it can also be very useful in medicine.

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?

Explore the concept of persistence of vision in this hands on activity.

How do our bodies get cold? How do sleeping bags keep us warm?

Everything and everyone ages. But scientists have made discoveries about our cells and circulatory and immune systems that could potentially one day be used to increase human lifespans.

Panic attacks are scary and they upset your body’s chemical equilibrium. Learn what happens to acids & bases in your circulatory system during a panic attack.

Learn about forensic pathology and other methods scientists use, like analysing the skeletal system, to identify the dead after a disaster.

The human eye lets us see the world by sending impulses to our nervous system. In many ways, it is very similar to other optical devices, including cameras.