Bhopal, April 29 -- Scientists from the Madhya Pradesh Council of Science and Technology and Scientific Council, Indian Institute of Technology, IITM, have started a research project to find whether Som Yagya, a havan in which the juice of a medicinal plant Somavalli (sarcostemma brevistigma, a kind of oleander) is offered to the fire, can purify the environment and promote cloud condensation, bringing about rain. P11...