As heatwaves become more frequent and intense around the world, scientists are exploring new ways to keep buildings cool without increasing energy consumption. Researchers at the University of Sydney, working with startup Dewpoint Innovations, have developed a nano-engineered coating that reflects up to 97% of sunlight and stays significantly cooler than conventional surfaces. The experimental…

In 1990, a small bird became an unlikely symbol of one of America’s fiercest environmental battles. The northern spotted owl was listed as threatened under the Endangered Species Act, putting the future of vast stretches of old-growth forest in the Pacific Northwest at the centre of a bitter fight between environmentalists and the logging industry.Thirty-six…