Pollution from textile production—dyes, chemicals, and heavy metals like lead and cadmium—is common in the waters of the Buriganga River as it runs through Dhaka, Bangladesh. It’s among many harms posed by a garment sector that was once synonymous with tragedy: In 2013, the eight-story Rana Plaza factory building collapsed, killing 1,134 people and injuring…

It’s getting harder to beat the heat. During the summer of 2025, heat waves knocked out power grids in North America, Europe, and the Middle East. Global warming means more people need air-­conditioning, which requires more power and strains grids. But a millennia-old idea (plus 21st-century tech) might offer an answer: radiative cooling. Paints, coatings,…