Cyanobacteria filled the ancient oceans and used chlorophyll to harvest the sun’s energy.
Did you recently hear news that Earth's oldest pigments were hot pink? That's not quite right. When they were in living bacteria a billion years ago, they were performing photosynthesis – and green.
Detail from a satellite photo of Lake Okeechobee’s algae bloom and the St. Lucie canal into which water was released. Rising water levels from heavy winter rains had water managers worried that water would breach the dike.
Toxic algae blooms like the intense one now fouling Florida’s waterways harm wildlife and people in various ways. They're also on the rise.
Blue-green algae in the Murray River upstream of Mildura in April.
Toxic algal blooms were unheard of in Australia's major waterways before 1991. Now the Murray River has been struck by four major events in less than a decade, with more likely in the future.
Blue-green algae blooms are increasing in size and frequency as global temperatures rise.
For the first time, researchers have shown that feeding vervet monkeys a toxin produced by blue-green algae resulted in protein deposits in the brain, consistent with those seen in human Alzheimer's.
Pretty, but also pretty nasty.
Willem van Aken/CSIRO/Wikimedia Commons
With El Niño ramping up, Australia is in for a long, hot, dry summer - perfect conditions for blue-green algae. And that innocuous-looking pond scum can pack a toxic punch if you're not careful.
Enormous algal blooms off Cornwall, which can lead to low oxygen waters.
The world’s oceans are plagued with the problem of “dead zones”, areas of high nutrients (such as nitrogen and phosphorus) in which plankton blooms cause a major reduction of oxygen levels in the water…
Pretty but deadly: researchers now understand how blue-green algae is linked to neurodegenerative diseases.
Scientists have known for some time now that exposure to blue-green algae is linked to increased incidence of several neurodegenerative diseases. But the reason for the link has been a mystery until now…