Ben Gulak thought Beijing’s air pollution was caused mostly by factories
Scooters in Beijing create less air pollution than cars.
The Uno, Ben’s invention, runs on electricity instead of petrol.
Ann Makosinski started inventing things when she was already an adult.
Ann’s idea for her torch came from a friend who didn’t have electricity at home.
Ann’s invention won an international science prize.
What shocked Ben Gulak when he visited Beijing?
Why do many people in Beijing ride scooters?
What is special about Ben’s invention, the Uno?
What inspired Ann Makosinski’s invention?
What energy source does Ann’s torch use?
What did Ann win for her invention?
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