Prime Minister Dr.Manmohan Singh has stressed upon the need for food security and overcoming diseases saying that these critically depend on the quality of institutions of science and technology in the country. He was inaugurating the five day long 97th Indian Science Congress in Thiruananthpuram today . Dr.Manmohan Singh said a Geo-spatial technology applications mission to provide crop planning and monitoring as well as flood management has recently been mounted. He also a called upon the Scientists to meet the challenges of climate change and manage scarce water resources. Prime Minister said,India must achieve energy efficiency and shift to renewable energy. He underlined the need for a plan for accelerated nuclear power.<br/><br/>Referring to the Copenhagen submit on climate change he said, there was a limited success as nobody was satisfied with the outcome. However, he said that the nation of the world have to move to a low green house gas emissions an energy efficient development path. In this context he said India has already decided to launch Jawaharlal Nehru National Solar Mission for the establishment of 20 thousand megawatt of solar generation capacity by the year 2020. This will provide an opportunity to indigenous scientific institutions to make contribution in this important area. About seven thousand delegates including Nobel laureates and eminent scientists from across the globe are attending the conference. Dr. Singh asked Indian scientists working abroad to return to the country to convert the "brain drain" to "brain gain". Listing out steps taken by his government , the Prime Minister said a special scheme named Consolidation of University Research, Innovation and Excellence (CURIE) has been launched to attract more women to take up careers in science.Dr. Singh announced that the government was considering revision of the value of doctoral and post-doctoral fellowships as well as formulation of schemes that would cover all research scholars with some funding support.