Wildlife watch

I'm Dr Alexander Krajete, and I help make our planet a healthier place. Together with my amazing team, I've created a special kind of filter that can clean dirty air. That means fresher, cleaner air for everyone and our ecosystem.

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Some living things help us to understand the health of the environment. Scientists call these organisms "bioindicators" and have been using them for years to check how clean our air, water, and soil are. This month, I've teamed up with Science+Nature to tell you how you can spot some for yourself.