Ingrid Waldron is a sociology professor at Dalhousie University who argues that African Nova Scotian and Indigenous communities are victims of environmental racism, forced to drink tainted water, breathe polluted air and live next to waste dumps. Now these concerns are reaching national and even global audiences thanks to a best-selling book and a widely streamed documentary, both titled "There's Something in the Water". It's made Waldron one of Canada's most influential environmental activists.