26 febrero 2015
The organisms commonly known as blue-green algae have proliferated much more rapidly than other algae in lakes across North America and Europe over the past two centuries — and in many cases the rate of increase has sharply accelerated since the mid-20th century, according to an international team of researchers.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/OjwnQclzsGU/150226084942.htm
