Iron-air batteries use a reversible rusting process to store and release electricity using abundant materials like iron and water. These “100-hour batteries” could solve renewable energy’s biggest ...

The Chinese bus company couldn’t work it out. Some days when its buses merely crawled along Shanghai’s streets, their power consumption would go through the roof. The reason why was a mystery. So, a ...

Electricity moved through air in a groundbreaking experiment conducted by scientists in Finland, proving that power does not always need plugs, cables, or traditional wires. By combining sound waves, ...

Japanese researchers at Kyoto University announced in December 2025 that they invented a coin-sized generator that creates 24/7 electricity "out of thin air." In December 2025, Facebook users shared a ...

An iron-air battery that stores and releases energy through a reversible rusting process has become the first of its kind to connect with a public electricity grid. On 30 July, the Dutch start-up Ore ...

Finnish scientists sent electricity wirelessly using sound waves and lasers. "Acoustic wire" uses ultrasonic waves for contactless electricity transmission. Finland pioneers practical wireless ...