While some cyanobacteria are among the deadliest organisms in the world, others help us flourish
Blue-green algae, or cyanobacteria, come in many forms and have generally got a bad press, mainly because five of the 2,000 identified species can produce some of the deadliest toxins known to science.
At the same time, they are among the oldest organisms in the world, dating back 2.1bn years, and we owe them a debt of gratitude.
More Stories
Cancer experts warn of coffee enemas and juice diets amid rise in misinformation
Elon Musk shows he still has the White House’s ear on Trump’s Middle East trip
UK sales of new Tesla cars slump by more than a third amid Musk backlash