Yawning is so contagious that it can spread to dogs and monkeys.
As humans take up ever more space and urbanize the untamed wilderness, the animals that call these places home have a tough choice to make: move on to someplace else or adapt to their new surroundings
Will Ferrell's World Cup pep talk.
The best medicine? No. Any sort of medicine at all? Well, that one is at least debatable.
It is true that some of these things can still be found, either old and faded on eBay or earnestly reproduced on specialty sites like The Vermont Country Store.
Somehow, one of Mental Floss' favorite Star Trek alums-turned-internet-sensations, George Takei, finds time to write Amazon reviews for products you never knew existed.
In the early days of mapmaking, plotting out the world was no easy task.
This week's new comics include John Romita, Jr. on Superman, Robert Kirkman's new comic and Cartoon Network has a Crisis.
Just as we humans cling to our air conditioners and plunge our heads into the freezer in the summer months, koalas have found a source of relief from stifling temperatures.