A Canadian icon is celebrating his birthday.

On Wednesday, environmental activist and broadcaster David Suzuki turned 85, and Canadians marked the milestone with congratulations on social media.

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Suzuki received birthday wishes from the likes of George Stroumboulopoulos, Mark Critch and more.

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A fierce advocate for the environment, Suzuki began his career in broadcasting with science-focused shows for children and adults on the CBC in the early 1970s.

In 1979 he began hosting the long-running programme “The Nature of Things”, which has been aired in nearly 50 countries around the world.

Suzuki has also published a number of books, and been a strong activist for global action on climate change.