Ananda Mohan Chakrabarty

Ananda Mohan Chakrabarty (1938–2020) was an Indian-American scientist known for using bacteria to help solve environmental problems.

• He worked with microorganisms, especially bacteria, and studied how they can be changed to do useful jobs.
• In 1971, he created a genetically engineered bacterium that could break down parts of crude oil. This was important because oil spills can harm water, soil, plants, and animals.
• Think of it like “training” a tiny living cleaner: the bacterium uses some oil substances as food and changes them into simpler, less harmful materials.
• His invention received a patent in 1980. A patent is a legal right that protects an invention so others cannot copy or sell it without permission.
• His work became famous because it showed that microbes can be more than just causes of disease—they can be powerful tools for cleaning pollution and protecting the environment.

Chakrabarty’s story connects microbiology to real life: tiny organisms, when understood well, can help humans tackle big environmental challenges.