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Solid Waste

Colourful mixture of scrap yarns

Recycling Yarn Part 1: Making Fibres

This is the first part of a two-part activity on recycling yarn.

Water treatment plant near Kitchener, Ontario

Water Treatment

Learn about how water is treated at municipal water treatment plants.

Rachel Chow dans un énorme conduit

Rachel Chow

Wastewater Process Engineer

Wasted food on the ground

The Environmental Impact of Wasted Food

One-third of all food produced is wasted. Learn about the environmental consequences of food waste, and what you can do about it.

plastic food containers, trays and food packaging made from polystyrene

Polystyrene: The Pros, the Cons, the Chemistry

Learn the organic chemistry behind this very useful plastic. Why is recycling polystyrene hard? Why does polystyrene often end up as solid waste?