DENVER (AP) — When a massive event center was being developed in Denver, planners had to contend with two existing 6-foot (1.8 meters) wide sewer pipes that emptied into the river, creating an ...

Every summer, heatwaves keep smashing records. The World Meteorological Organization reported that the past seven years were the hottest ever recorded. As cities keep warming, buildings and people ...

Wastewater flushed down the drain can be used to heat and cool homes and buildings in a sustainable way. Pipes that transport sewage are already built, making it a low-cost, widely available resource, ...