Have you ever wondered why certain animals, birds, and fish never cross an invisible boundary in nature? This mysterious line has baffled scientists and nature enthusiasts alike. In this video, we ...

British biologist and naturalist Alfred Russel Wallace gives his name to the Wallace Line, an invisible division that ...

In fact, there are several organizations and a fledgling movement that is growing to address rural access barriers for the one billion people ... you understand the importance of accurate and ...

Researchers now understand why there is an uneven distribution of animal species on either side of the mysterious boundary, known as the Wallace Line. When you purchase through links on our site ...

According to a new study by an international team of researchers, a see-through partition does the trick, too -- as does a pretend barrier that doesn't exist at all. Published in the journal ...