Unit A: Living Systems Respond to Their Environment

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.

A study on bird feeders and beak sizes shows how an everyday human activity can affect the evolution of another species.

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

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

Be a biochemist! Learn how to extract DNA from an onion and find out what DNA looks like.

Medical biotechnology allows scientists to make changes to the genomes of living things. What are the pros and cons of having access to techniques like these?

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 how people came to understand the source of cosmic radiation, as well as how this radiation impacts those who work in and travel on airplanes.

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

In 2013, many Europeans learned their beef lasagnas were actually made of horse meat. Learn about food fraud, and how a Canadian invention can help detect it.

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

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

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

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.