Elmo is the only non-human to testify before Congress.
Try to spot them this Fourth of July.
Employees had to work at the same time and wear the same outfit, and if one called out sick, the other twin was forced to take the day off.
Bring some First Lady facts to this year's Fourth of July barbecue.
Thanks to Paul Greenwod, who penned The RULES and ORDERS of the Coffee-House in 1674, we’ve got the basics to keep you from embarrassing yourself in front of 17th century London’s most progressive soc
There have been many harebrained attempts at preventing tornadoes.
Meet Mount Etna. Europe’s tallest active volcano, this Sicilian landmark has a knack for inspiring artists.
Mental Floss marketing director Yasir Salem is a seasoned competitive eater, ranked #12 in the world. Here's how he does it.