An engineer in India is designing the world's first Braille smartphone. Take a look at how the prototype works.
Sumit Dagar, a 2011 TED fellow, is developing the world's first Braille smartphone.
Many foods that you think have health benefits may hold hidden dangers for your diet.
Dutch National Archives
Former Beatle John Lennon would have turned 75 on Friday. Take a look at Lennon's life and career, from The Beatles and beyond.