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In the evolution from primates to humans, we lost our hair and developed a layer of fat. But as science is discovering now, we also lost our ability to synthesis a few compounds which were critical for the long term survival of humans. But what if I told you that the last Ice Age had a lot to do with it? This week, we uncover the fascinating story of how genetic mutations and climate change shaped Indian food, even before humans existed. Tune in, and discover the natural forces which impacted Indian food, in ways you would not have imagined.