A new study based on two decades of data shows what happens in an ocean ecosystem without great white sharks. Great white ...

There are also albino animals that lack most or all pigment. Scientists recognize these color variations as extreme abnormalities within the natural world. Being all black or all white is a rare ...

They find a suitable water hole and roll in its mud, coating their skin with a natural bug repellent ... scent each enormous animal leaves behind it on the landscape. White rhinos have two horns ...