Daan Roosegaarde: A smog vacuum cleaner and other magical city designs

Daan Roosegaarde uses technology and creative thinking to produce imaginative, earth-friendly designs. He presents his latest projects -- from a bike path in Eindhoven, where he reinterpreted "The Starry Night" to get people thinking about green energy, to Beijing, where he developed a smog vacuum cleaner to purify the air in local parks, to a dance floor that generates electricity to power a DJ booth. Check out Roosegaarde's vision for a future where creativity is our true capital.

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S2017E179 - Erin Marie Saltman: How young people join violent extremist groups -- and how to stop them