Recently, a girl and an uncle got into a fight in the Delhi Metro. The video of this heated argument between the two is rapidly going viral on the internet. Delhi Metro Viral Video: Cases of fights ...

It takes 14 wastewater treatment facilities scattered throughout the five boroughs to clean up all of our dirty water. We visited the largest facility, the Newtown Creek Wastewater Treatment Plant ...

The sewer system is an ideal conduit for such cables ... Niederberger Engineering of Stans has developed robots which perform another type of dirty and dangerous work: cleaning high-rise windows ...