Pioneering University of Stirling-led research has revealed the diverse and damaging impact Himalayan balsam has on river ecosystems. Subscribe to our newsletter for the latest sci-tech news updates.
Graham Roberts (left) leads the team of "balsam bashers" on the River Lim "We got to the field and it was just a sea of pink," said retired conservationist Graham Roberts, who is waging a war on ...
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