Can invasive species be contained? Inside a $1.5-trillion battle | W5 INVESTIGATION

Authorities have spent $1.5 trillion over 50 years to prevent the spread of invasive species throughout the world. But is humanity fighting a losing battle in a war that it started?
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W5 is Canada’s most-watched investigative, current affairs and documentary program. Tackling major stories and investigations W5 is in its 51st season.