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A drone being controlled in the sky

The US Army is making a laser-powered drone that can fly indefinitely

3 September 2018

Drones use so much power they can only fly in the air for a short period. So the US Army is creating a system to power them in mid-air from lasers on the ground
Two people push children in prams

Babies are at risk from air pollution but some pram designs can help

31 August 2018

Air pollution is worse for infants than adults. Here are the design features to look for in a pram to protect against it

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