Minister of State for Science and Technology and Earth Sciences Y S Chowdary termed the rise in the number as "significant".
"There is a significant increase in the number of Indian scientists returning to work in India during the last five years...the number of Indian scientists returned to India in the last five years (2012-17) stands at 649 as against 243 in the period 2007-12," Chowdary said in written reply to a question.
Similarly, the Department of Biotechnology (DBT) has been offering Ramalingaswami Re-entry Fellowship to attract Indian scientists to the country.
He said that the ministry did not have a mechanism to keep track or estimate the number of Indian scientists who leave the country to work abroad.
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