On QI once they pointed out that although Everest is the highest mountain on earth...

...it isn't the tallest which is Mauna Kea (because it's base is below sea level).

However, on the QI book of General Ignorance the cover blurb says "Everest is the highest mountain in the world. WRONG!"

Posted By: yarmyyarmy, Sep 2, 11:59:44