The tropics are the most biodiverse regions on Earth. Now there is evidence that they are also the main source of evolutionary innovation and diversity
Source:
https://www.newscientist.com/article/2228655-four-great-waves-of-animals-have-spread-out-from-the-tropics/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home