Celebrate Leap Day with this challenging frog riddle! Find out the answer here: http://t.ted.com/zcOqMwh | TED-Ed

Kickstarter Final Days! 🚀 Escape‑room meets board game: immerse yourself in a narrative that evolves with every puzzle solved. Video Credit: Tammy McLeod Puzzler https://www.youtube.com/watch?v=hyVAMDRRpMA | TED-Ed

Can you use logic to solve the riddle and save yourself from the cursed temple? Find out the answer here: http://t.ted.com/yvRJYLo | TED-Ed

This has been called one of the hardest logic puzzles in the world. Can you solve it? Find out the answer here: http://ow.ly/Ooxta | TED-Ed

Happy birthday, Albert Einstein! Try your hand at a riddle supposedly written by the genius himself: | TED-Ed