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Unit C: Investigating Matter and Energy in Living Systems

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!

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!

Snake with open mouth

How Snake Venom Kills… and Saves Lives

STEM Explained

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

How do I construct a terrarium?

How do I construct a terrarium?

Hands-on Activities

You can make your own terrarium for growing plants!

Green walls in Harvard University

Green Walls

STEM Explained

Green walls use plant processes to improve air quality in buildings.

aging through childhood, adulthood and old age

Have Scientists Found a Way for People to Live Longer?

STEM Explained

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.

Lacks historical marker in Clover, Virginia

Why is Henrietta Lacks Important?

STEM Explained

When the cells of Henrietta Lacks were collected by medical researchers after her death in 1951, it changed the future of medicine.

Woman having a panic attack

Chemical Equilibrium and Panic Attacks

STEM Explained

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.

Hand with screwdriver “repairing” DNA

DNA Damage and Repair

Backgrounders

This backgrounder explains the different ways that cells repair damage to DNA.

Cocoa beans and cocoa powder

Can Chocolate Make Your Brain Work Better?

STEM Explained

Researchers have found that consuming foods rich in flavanols is linked to more efficient blood flow, which can improve brain function.

T cells and cancer cells - Image © Meletios Verras, iStockPhoto.com

Can Your Own Cells Cure Cancer?

STEM Explained

When a person has cancer, CAR-T Therapy uses their own cells to destroy the cancer cells in their body.

Dietitian Sorting Out Food Groups

Careers: Dietitian

Picture Collections

5 images of some work that a dietitian might do such as educating patients about how food affects their health

Image © TLFurrer, iStockPhoto.com

Are Microbes Your Friend or Foe?

STEM Explained

Microbes are everywhere, even in your digestive tract. Some of these microbes are helpful, and some aren’t.

heavy metal band

A Taste of Heavy Metal

STEM Explained

Heavy metal is a term for some toxic chemical elements. They can cause problems like bioaccumulation, but are useful in nuclear medicine and medical imaging.