In 2009, the Indian government launched a national competition to find a design for the Indian rupee.

With more than 3,000 entries and five finalists, the winning design was announced on 15 July 2010.

The designer was by Udaya Kumar Dharmalingam, a student at the Industrial Design Centre at the Indian Institute of Technology Bombay. He speaks to Surya Elango.

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You can learn all about fascinating and surprising stories, such as the civil rights swimming protest; the disastrous D-Day rehearsal; and the death of one of the world’s oldest languages.

(Photo: Udaya Kumar Dharmalingam on 15 July 2010. Credit: Abhijit Bhatlekar/Mint via Getty Images)