Issue Date: Jun 15, 1998
The Centre of Science for Villages (CSV), Wardha, Maharashtra, has developed a microbiogas plant with a battery of 300 litres clay jars, which is known as Ranjan biogas plant. The biogas plant is a large clay pot churned on the potter's wheel that is utilised for storing water during summers. Ten Ranjans provide four hours of non-stop cooking gas. The plant produces nearly 35 litres of biogas from one kg of cowdung, says Devendra Kumar, director of the CSV. The daily need of an individual is around 270 litres.
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Butterflies on the roof of the world is a vivid and engaging narrative of the author's rendezvous with the butterflies and moths in particular, and nature in general