The French designer Edgar Brandt spurred a revival of interest in interior furnishings made of iron in the 1920s. His participation in the 1925 Paris Exposition won him great praise. Brandt’s ironwork was admired throughout the fair; he designed the gates of the front entrance, his work featured in Ruhlmann’s pavilion, and he staged an...

Why? This solar technology is distinguished by its use of mirrors to capture light and focus it onto a small generator to produce electricity and thermal energy. The parabolic optical dish follows the sun from dawn until dusk, harnessing seventy percent of the solar energy that hits it, making it much more efficient than conventional...