Firebricks have an ancient history but could be part of clean energy's future. Researchers estimate it could save $1 trillion ...

Combine your errands into a single trip ... U.S. Department of Energy. "Lighting Choices to Save You Money." U.S. Department of Energy. "Energy-Efficient Landscaping." Chime Savings Account ...

Industries use them to store heat from burning fossil fuels; newer versions conduct electricity. Firebricks could save over $1.2 trillion in renewable energy storage costs by 2050. Industrial ...