Three teens built a salt-powered fridge to help bring vaccines and medical supplies to rural areas. The invention uses salts that pull heat from their environments when they dissolve in water. They ...

It's officially summer and you might be left without electricity due to weather changes. If a summer storm leads to a power outage, the food in your refrigerator and freezer is at risk of spoiling. A ...

Whether it's the middle of summer and you're running air conditioning to beat the heat, or the thick of winter when heat is essential to avoid freezing, it can be tough to keep energy costs down. It ...