A traditional water harvesting system helps green a dry region.

The Raika tribals have developed an exhaustive system of veterinary medicine based on local herbs and products.

Though Vedic maths evokes Hindutva connotations, the fact is that it's a system of simple arithmetic, which can be used for intricate calculations.

Extant texts of the Vedas do not contain mathematical formulae, but they have been found in later associated works.