Science & Environment

New toxic cyanobacteria in Columbia River prompts health alert following two dog deaths

By Sukhjot Sal (OPB)
May 29, 2025 12:45 a.m. Updated: May 30, 2025 8:47 p.m.

Benthic algae mats often appear attached to the floor of a waterway or floating in water in clumps. The bacteria were also reportedly seen earlier this week.