A hydraulic ram is a clever device invented over 200 years ago that can pump water uphill with no other external source of power except for the water flowing into it and there is a way to take ...

Welcome to our new series, Cities 101, which will answer questions about how the city’s infrastructure works. First up: Watertowers. Water towers figure prominently in New York City’s skyline, with ...

The highly efficient devices are the darlings of the environmental movement. Here’s why. By Hilary Howard Heat pumps, which both warm and cool buildings and are powered by electricity, have been ...

Despite a dip in sales last year, heat pumps are continuing to take Europe by storm. These devices take energy from the air, ground or water and transform it into heat or cool air. But how, when and ...

Question: How, exactly, do the water towers in a community function? How are they kept filled, etc.? Answer: Water towers are among the most visible components of a public water system and often are a ...