Previous research has shown that people often choose partners with similar levels of attractiveness—a phenomenon known as assortative mating. However, these studies typically relied on simple ...

Right image: A large Burmese python mating ball discovered in the Everglades containing one female and five males. (Image credit: Conservancy of Southwest Florida) Left image: Ian Bartoszek, a ...

It is an event rarely witnessed. This fact sheet was updated in August 2016 to reflect the most recent information. At special times each year, certain fish find their way to unique gathering places ...