Union Minister of Science and Technology and Ministry of Earth Sciences, Harsh Vardhan demonstrated Bio-Solar ATM during "DST Conclave 2017" in Kolkata on May 3, 2017. (Photo by: Saikat Paul/Pacific Press)

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Keywords: atm, bengal, bio-solar, demonstration, department, earth, government, harsh, india, kolkata, minister, ministry, science, sciences, tec, techno, technology, union, vardhan, west