Arizona

Although there are trillions of liters of water floating around in the air, it’s not easily accessible. Now engineers have developed a device powered by the Sun that can pluck practical quantities of drinkable water out of thin air, and they've successfully field-tested it in the Arizona desert.

Occasionally asteroids will get caught in a gravitational dance with our planet for a few years, and last year astronomers discovered one of the most stable of these “quasi-satellites”. Now they’ve peered closer to get a better understanding of what it is and where it might have come from.

​​An international team of researchers has calculated the cataclysmic conditions created when an asteroid struck northern Arizona roughly 49,000 years ago by analyzing the structure of microscopic diamonds known as zircons.

Fluor Corporation has announced plans to build a 125 MW photovoltaic solar power plant in Maricopa County, Arizona by the end of 2013.

Arizona Public Service and Starwood Energy Group Global, LLC have just announced plans for a 290-megawatt concentrating solar plant to be built in Arizona which will produce enough electricity to power more than 73,000 homes.

A project to build a 220mph solar-powered bullet train would not only dramatically improve travel times, it would be much better for the environment.