10 most expensive cities in the world
Sumit Dagar, a 2011 TED fellow, is developing the world's first Braille smartphone.
An engineer in India is designing the world's first Braille smartphone. Take a look at how the prototype works.
Outdoor Circle wary of commercialization of public spaces
The Supreme Court announced Thursday that it will hear a challenge to state bans on same-sex marriage April 28.
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