This Sunday, Discovery Network's Shark Week lunges and thrashes into your living room, leaving a predictably satisfying body count. This ritual promises to get a parched, drought-ridden nation through the long, dog-days of summer—and delivers.

Scientists have successfully flown the world's first 3D printed plane. Created entirely with printing technology, the plane went from design to completion in one week. Thanks to its novel manufacturing process, it has no fasteners and even its moving parts were printed all at once.

Tonight, Professor Brian Cox

Skeptics once dismissed EnviroMission's desert Solar Tower as a visionary mirage, but now the huge energy project is on the verge of becoming reality, and, someday a world-class tourist magnet. Once completed, construction will begin on the project's 2,625-foot tower—just 390 feet shy of the Burj Khalifa in Dubai. Delivering power by 2015, its 200-megawatt capacity will feed the grid with enough energy for 150,000 US homes.

In the race to develop greener energy, no self-respecting global oil company wants to be left behind. They're already bulking up on natural gas. Recently, French oil major Total has invested in solar cell maker SunPower; meanwhile Shell, Exxon, and Chevron have invested hundreds of millions in biofuel technology, and BP has added biofuels to wind.