Name the author of the book Gandhi in Champaran.

Prime Minister Narendra Modi released a photo book titled "President Pranab Mukherjee - A Statesman", at an event in Rashtrapati Bhawan. It overs the Presidency and documents his various roles.

Caltech scientists have made the world's smallest recreation of Leonardo da Vinci's Mona Lisa, the size of a bacterium, out of DNA. The technique, dubbed DNA origami, enabled scientists to fold DNA into desired self-assembling structures using 64 tiles, which were 100 nanometers wide. The team also created a life-sized portrait of a bacterium and a bacterium-sized portrait of a rooster.

Raghuram Rajan explains economic concepts and talks of issues like tolerance and connection between political freedom and prosperity in his new book - I Do What I Do: On Reform, Rhetoric & Resolve - which is a collection of essays and speeches during his stint as RBI head. When Rajan took charge as RBI Governor in September 2013, the rupee was in free fall, inflation was high and exchange reserves were falling.

The President of India, Shri Pranab Mukherjee received the first copy of the book "President's Lady" (Pranaber Preyosi) on his wife Late Smt. Suvra Mukherjee from Vice President of India, Mohd. Hamid Ansari who formally released it at a function held at Rashtrapati Bhavan. The author of the book is Sangeeta Ghosh.

A new book "Winning like Virat: Think & Succeed like Kohli" by Abhirup Bhattacharya, unravels the secrets of the cricketer's consistent form, while attempting to decode his philosophy towards life. In the book, the writer etches Virat's success curve by using statistics that chart his performances and anecdotes from his predecessors and contemporaries in the game. It also throws light of Virat's exceptional efficiency as a family man, who manages to take time out for his mother, brother and sister, despite a taxing schedule.