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Could chopsticks idea help save the planet?

A new design of chopstick which could save vast numbers of trees from the axe and a pioneering way of creating electricity through road traffic noise are just two of the ideas vying for the St Andrews Prize.

The St Andrews prize

The University of St Andrews is looking for new and inspiring ideas to help the environment.

New solutions for waste management

A system using rainwater as the basis for organic compost and a project which could reduce pollution emanating from semi- conductor plants are among the pioneering ideas competing for a prize aimed at finding practical solutions to worldwide environmental problems.