A subway worker walks away after a train departed the station in central Pyongyang, North Korea May 7, 2016. (Photo by Damir Sagolj/Reuters)

Workers clean empty cooking oil containers at a roadside recycling workshop in Kolkata, India, July 13, 2016. (Photo by Rupak De Chowdhuri/Reuters)

A general view of the Israeli settlement of Maale Michmash on January 17, 2012 in the West Bank. Israeli-Palestinian talks have been stalled for more than three years over the issue of Israeli settlement construction. (Photo by Uriel Sinai/Getty Images)

Workers sleep on a railway track under repair in New Delhi, India, June 15, 2018. (Photo by Saumya Khandelwal/Reuters)

Workers carry a metal sheet at a dockyard in Dhaka, Bangladesh, December 5, 2018. (Photo by Mohammad Ponir Hossain/Reuters)

A brick factory workers stack bricks on carts in Dhaka, Bangladesh, January 9, 2019. (Photo by Mohammad Ponir Hossain/Reuters)

Green building also known as green construction or sustainable building is the practice of creating structures and using processes that are environmentally responsible and resource-efficient.

Making use of ULC (ultra light construction,) an Austrian car enthusiast Hannes Langeder managed to build the lightest and slowest Porsche in the world. ...