added by lilyZ
Tornadoes are some of the most destructive forces of nature. Learn how tornadoes form, how they are rated, and the country where the most intense tornadoes occur.
Before the euro was introduced, the continent featured a wide range of unique national currencies. This delightful animation shows what coins looked like before the eurozone.
National Geographic Explorer Carlton Ward, Jr., has spent 10 years documenting the elusive Florida panther. Join him in the field as he sets up camera traps and shares his passion for protecting Florida's wildlife corridor. …