Energy & Green Tech

The next generation of solar energy collectors could be rocks

The next generation of sustainable energy technology might be built from some low-tech materials: rocks and the sun. Using a new approach known as concentrated solar power, heat from the sun is stored then used to dry foods ...

Energy & Green Tech

Investigating an innovative solution for thermal energy storage

Have you ever gotten relief from summertime heat by draping a wet towel over your head? If so, you've benefited from a phase-change material (PCM): a substance that releases or absorbs energy when it transitions between ...

Energy & Green Tech

Thermal storage units that repair themselves

In the future, paraffin wax could help to make underground thermal storage units more durable. Such systems are used, for example, to store solar energy over a longer period of time. In a new study, geologists from Martin ...

Energy & Green Tech

Cooking with solar ovens in sub-Saharan Africa

Although sub-Saharan areas may seem perfect for solar ovens, many people use wood or coal as the main source of energy for cooking, especially in areas that are not connected to the power grid.

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