Toxic blue-green algae spread across Florida’s largest freshwater lake has become so huge that can be spotted from outer space.
The algae grew to cover 420 square miles of Lake Okeechobee on 4 July, and reached a whopping 440 square miles by 11 July, according to NASA earth observatory. The lake it covers is only 730 square miles, so the toxic algae is now coating more than 60 per cent of the body of water.
