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.
It may be hard to believe, but it's already been 25 years since the likes of Sinéad O'Connor, Wilson Phillips and Vanilla Ice topped the charts. Take a look back at who else produced the top pop hits of 1990.