AN ANCIENT underground labyrinth city with its own advanced water system has been discovered after researchers stumbled across it in a garden. The sprawling network of twisting passages was found ...

Abstract: Underground gas storage (UGS) is essential for balancing the natural gas supply and demand ... a new downhole optical fiber cable was designed. The results showed that the DFOS system could ...

After centuries of speculation, archaeologists in Peru have confirmed the existence of an underground tunnel network ... likely served as a communication system across the city.

the country’s sewerage system was developed in phases. Before independence in 1957, latrines were outdoors and mainly the pour-flush method. After the formation of Malaysia, the government began ...

Saudi Arabia has officially connected its largest battery energy storage system (BESS) to the grid, marking a significant milestone in the country’s renewable energy expansion. The project ...

Researchers believe that the tunnel system was an underground representation of the above-ground street network of the ancient Incan city of Cusco. Located about 130 miles from Machu Picchu ...