Argentina's giant rodents dyed Hulk green by algae First a river ran blood red. Now Argentina's beloved giant rodent, the capybara, has been coated in Hulk-green slime as pollution turns the country's ...

Cyanobacteria thrive in warm, sunny lakes and ponds that contain excess nitrogen and phosphorus nutrients derived from fertiliser, manure and sewage. When conditions are right, cyanobacteria multiply ...

It's recommended to use the low-pressure setting on the machine if you're using one, to avoid dislodging the patio slabs. Use ...