The acold blast of an aerial conditioner tin beryllium a alleviation arsenic temperatures soar, but 'A/C' units necessitate ample amounts of vigor and tin leak greenhouse gases. Today, scientists study an eco-friendly alternate -- a plant-based movie that cools erstwhile exposed to sunlight and comes successful galore textures and bright, iridescent colors. The worldly could someday support buildings, cars and different structures chill without requiring power.