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Researchers in China and Australia made a purple fabric that reflected 87.6% of solar radiation and stayed 7.6°F cooler than white cotton in outdoor tests. It also kept its color and cooling performance after washing. The work is still early, but could inform safer clothing for people working in heat.
Purple cooling fabric outperforms white cotton in sun tests
In Jujuy province, the Tren Solar de la Quebrada runs 42 kilometers on batteries charged with local solar power and regenerative braking, reconnecting six towns by passenger rail after 30 years. More than 90,000 people have used it since June 2024, with diesel avoided on a UNESCO-listed Andean route.
Argentina’s solar train returns rail to an Andean valley
Frecciarossa tests advance Italy–Germany high-speed rail
Vattenfall finds second uses for retired wind turbine blades