OxiCool air conditioner uses H2O as a refrigerant

Could a clean AC revolution be afoot? OxiCool's HomeCool unit is encouraging...we're eager to know more.

Prefabricated Home Manufacturer Dvele to Make High-Efficiency Homes Grid-Independent

Dvele's combination of solar paneling and battery backup systems will keep the lights on in their prefabricated homes even when the grid is down.