On clear days in Hartbeespoort, South Africa, satellite images often reveal a reservoir with shades of deep blue interrupted ...

Fish rule the waters, but surprisingly, even they can face a shocking fate underwater. Can you guess what happens when their ...

Time-lapse of algae growing in water. We poured pond water in a glass container and added a small piece of algae into it. The ...

The fish become nearly immobile, use very little oxygen, and hardly feed at all. Native species — such as carp, roach, pike, ...