Indian scientists have protested about claims made at a local science conference that rubbish the work of some of the world's greatest physicists and suggest modern breakthroughs such as in-vitro fertilization were in fact invented in ancient India.
In a lecture at the Indian Science Congress and posted on YouTube, one speaker, Kannan Jegathala Krishnan said Isaac Newton was wrong about gravity, Albert Einstein made a "big blunder" and questioned Stephen Hawking's achievements.
Another speaker, G. Nageswara Rao, a vice-chancellor at Andhra University in southern India, used stories from Indian epics Ramayana and Mahabharata as proof the people of ancient India had aircraft, test-tube babies and that stem-cell research "was done in this country thousands of years ago.