Though great on a hot day, an air conditioner is expensive, consumes a lot of energy, and often requires coolants that deplete ozone.
Alternatives for Polystyrene Foam, Made from petroleum, Styrofoam is used in everything from coffee cups, building materials and construction, transportation, and packaging industries. Made from toxic ingredients, depends on petroleum.
Rose inspired device, inexpensively collects and purifies water. The device, a new approach to solar steaming for water production.