STEM Explained

Aquaculture is seen as a sustainable way to produce fish. But are farmed salmon better than wild fish?

Canadian astronauts Jeremy Hansen and David Saint-Jacques explain how learning to fly an aircraft prepared them for the challenges of living in space.

Gamma rays might make you think of cancer, harmful radiation or superheroes. But gamma rays have lots of uses: food safety, manufacturing and even medicine!

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?

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

How do different populations adapt to their environment? Let’s explore this concept through guppy speciation.

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.

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

Brewing beer involves a series of complex biochemical reactions.

Arctic animals have evolved to thrive in harsh arctic ecosystems, but the environmental footprint created by climate change is affecting their survival.

Bees are important for agriculture. But bee populations face threats. This resource looks at Colony Collapse Disorder, herbicides & pesticides, and more.

Scientists can observe birds to get useful information about the health of, and changes in, an ecosystem.

You don’t have to pedal harder to go faster. You just have to understand a little bit about gravity, drag and friction!

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.

When a nuclear reactor is no longer in use, the radioactivity in its materials remains. That’s why it’s important to safely deal with the radioactive waste those plants leave behind.