The solar-powered trash compactors that have appeared on the streets of Philadelphia and other cities can go four times as long as old-fashioned wire baskets before needing to be emptied, saving municipalities millions of dollars, according to CNN. Not only that, they send alerts when they’re full, making pickup much more efficient. Philadelphia was able to reduce the size of its trash-collection crews by 73pc.

(Source: CNN)

Published in Dawn, Economic & Business, July 28th, 2014