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Through nanotechnology, the practice of medicine is evolving from treating illness to a practice that is predictive, personalized, and pre-emptive. Will there be a medical future where permanent nano-devices can roam the body to monitor, provide early diagnosis, and take action against diseases?

So, will nanotechnology save the Earth’s environment? Or will it provide another way in which humans can harm nature? We meet scientists who believe that nanotechnology may be the key to overcoming the biosphere’s environmental problems. But what happens when nano-structured materials decay?

The invisible revolution of nano technology is at work in our lives. This episode introduces us to the world of nanomaterials; photocatalytic coatings, and nano fibres stronger than steel. The episode then explores nano’s potential role as invisible intelligence in security devices.