In Ahmedabad, India, where the temperature soared to 108 degrees on Monday—and where high temperatures will stay well over 100 for at least the next 10 days—it’s even hotter inside small shacks in ...

The main material is EPDM (Ethylene Propylene Diene Terpolymer), an extremely resistant, high-performance synthetic rubber membrane comprised of two primary ingredients: ethylene and propylene, ...