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This week's episodes and hands-on activity explore re-engineering.

What exactly are bacteria? What types of bacteria are there? And are they really as bad as people think they are?

An inflammatory response is your body’s attempt to fight invaders. Learn how your body springs into action when attacked!

Learn how cumulus clouds form.

This week's episodes and hands-on activity explore block programming.

Learn about the potential of algae as a material for making biofuel.

Find out how scientists figure out the information on food nutrition labels and why that information can help to keep you healthy.

Getting electrons excited by heat can cause certain materials to give off visible light when heated - like filaments in light bulbs.

Learn about the basics of viruses.

Mussels are a kind of invertebrate that filter food out of the water they live in. This makes them a great tool for monitoring environmental water quality and tracking bioaccumulation in aquatic food webs.

The patchwork fur colour of Calico and tortoiseshell cats is an interesting case of genetics, heredity and sex-linked traits.

What adaptations and processes do trees in northern climates have to survive winter?

How do beef and dairy cows contribute to climate change? Livestock agriculture is a source of methane, a powerful greenhouse gas.

Ever go to pour ketchup on your fries… and nothing comes out? We’ll let the secrets about the viscosity of this non-Newtonian fluid out of the bottle!

The lever is a type of simple machine. Learn about the different classes of levers and how they provide mechanical advantage.