A few years ago, a small community library in the United States received an unexpected donation. The money helped keep programs running, supported local readers, and eased worries about funding. Stories like that often make the news because large donations are easy to measure. The numbers attract attention.What usually goes unnoticed are the smaller acts…

According to Science Direct, the hospital’s annual cooling demand is about 1,000 MWh. A hospital in central Sweden found an unusual way to meet its summer cooling needs by storing snow from winter and using it months later. The Sundsvall Regional Hospital uses a large snow storage system designed to preserve winter cold until the…