Eco Trees

As part of the upcoming Aqua Metropolis festival in Osaka, engineering firm NTT Facilities has developed a pair of solar-powered, UFO-shaped floating water purifiers that will be deployed in the city’s canals and in the moat at Osaka Castle.

In United States, the air pollution is a threat for the health of 186 million people, especially those from cities like Visalia and Fresno – both in California – that have been placed by the Forbes publication on the first places in the top of America’s most polluted cities.