Mexico installs `robotic trees´ to tackle air pollution
(WorldNews France)

In the central-southern Mexican city of Puebla, a start-up has installed “robotic trees� who suck up as much air pollution as 368 real trees, using microalgae in their towering metal structure. Trees are one of the best things we have to clean the Earth’s air, but they have certain drawbacks: they need time and space […] ......