Electronic trash can be very valuable - in the schemes of old cameras, phones and other equipment contain
The Japanese Olympic Committee in 2017 opened in 1594 municipalities collection points for old equipment, which, according to data for November last year, dropped about 47,488 tons of broken gadgets.
This allowed the committee to meet the need for gold for smelting medals by 93.7%, in silver - by 85.4%. The design of the medals will be presented in mid-2019, the newspaper notes.
Earlier Australian scientists from MelbourneThe Royal University of Technology (RMIT) has developed eco-friendly bricks made of baked clay, which includes biosolides - substances contained in wastewater.