US scientists harness sunlight to capture CO2 in low-energy breakthrough

Harvard scientists have developed molecules that use sunlight to capture carbon dioxide from air in a breakthrough that could transform climate efforts. These "photobases" generate hydroxide ions when activated by light, making the carbon capture process significantly more energy-efficient than current methods. The reversible, solar-powered technique offers a practical path toward removing greenhouse gases at scale without the high energy requirements that have limited widespread adoption.