As temperatures climb, so does the risk of potentially harmful cyanobacteria blooms—commonly known as blue-green algae—that can pose serious health risks to people, pets and livestock.

As summer approaches, the Oregon Health Authority (OHA) is urging residents and visitors to be vigilant about potentially toxic cyanobacteria blooms in the state's lakes, rivers, and reservoirs.

The Daily Maverick shows that lakes and reservoirs are being blocked by toxic cyanobacteria, regardless of climate change. Water infrastructures in South Africa have been poorly managed.