Season 17 of American Ninja Warrior continues to be a white-knuckled watch as the first round of Semifinals kicked off on July 14. Karen Potts going through an obstacle course on American Ninja ...

American Ninja Warrior's Season 17 Semifinals continued on Monday, July 21 with more gravity-defying Ninjas. With a bigger course and the stakes higher than ever, the ...

A ninja history student in Japan sent her education into stealth mode when she turned in a seemingly blank paper for her term essay. Eimi Haga wrote the essay with invisible ink. Haga told the BBC ...

A Japanese student aced an assignment on ninja culture by making her own invisible ink from soybeans in a stealthy move that impressed her professor. Eimi Haga, a member of Mie University's ninja club ...

A "ninja history" student at Mie University in Japan shocked her professor when she handed in her final exam. At first, her submission looked like a blank sheet, but a small note at the top read, ...

A Japanese student of ninja history turned in what looked like a blank piece of paper to her professor —and ended up getting top marks when he realized the essay was written in invisible ink.