Anirudh Sharma: Ink made of air pollution

What if we could capture pollution in the air around us and turn it into something useful? Inventor Anirudh Sharma shares how he created AIR-INK, a deep black ink that's made from PM 2.5 pollution. See how he hacked together a clever way to capture these tiny particles -- and make the world just a little bit cleaner in the process.

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S2019E49 - Shad Begum: How women in Pakistan are creating political change