The PM has left for an official trip to the UK and Finland.

A couple of years ago, Dr Singh had celebrated his birthday on a flight between Frankfurt and New York.

Researchers and scientists in India would have to be innovative if the country wished to unleash its vast intellectual potential, chairman and managing director of Biocon Ltd Kiran Mazumdar Shaw said on Saturday.

'When I hear of someone going to India I tell her the importance of etiquette and dress code. No skimpy clothes,' says anthropologist Susan Seizer.