Add Yahoo as a preferred source to see more of our stories on Google. A wastewater heat recovery system operates Tuesday, Dec. 2, 2025, at the National Western Center in Denver. (AP Photo/Brittany ...

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 ...

Chinese scientists have developed a new type of cement that can cool buildings naturally, without using any electricity. This cooling cement reflects sunlight and releases heat into space, helping ...

DENVER – 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 unsightly ...

Read full article: Mayor Joe Cobb on Roanoke City’s budget squeeze and the $16.5 million school gap An agreement shows the site could draw 2–8 million gallons a day from Carvins Cove, raising ...