Dr Shitarashmi Sahu has converted steel‑industry slag into eco‑friendly bio‑fertilisers in Odisha's Rourkela, improving soil health and increasing crop yields by 20%. Dr Sahu has partnered with over 500 farmers across the state, providing them with expertly formulated fertilisers, as per The Better India. "This innovation effectively controls the toxic metal content within the waste," Sahu said.