The Solar Impulse successfully lands in St. Louis early Tuesday to finish the third leg of its five-leg trek from San Francisco to New York.
Elon Musk's tube transport concept unveiled a year ago remains just that: a concept. It also proves that even when the Internet falls in love, radical ideas rarely exit the realm of fiction.
Using only the power of the sun's rays, the souped up lightweight aircraft climbs to nearly 6,000 feet and stays aloft for more than two hours.
The aircraft's lengthy wings are outfitted with 17,000 solar cells that will power it during a trip around the world next year.
Social-networking giant looking at the company's solar-powered high-altitude drones to deliver Internet access, according to TechCrunch.
As the solar-powered plane nears the end of its coast-to-coast U.S. journey, pilot André Borschberg speaks with CNET about the view from 8,000 feet up.
The longest leg of the cross-country tour marks a distance record for solar-powered aviation as the slender aircraft touches down in Texas.
The solar-powered airplane departs California on a tour that will take it across the nation ahead of a globe-circling journey in 2015.
Before trying to fly around the world without using a drop of fossil fuel, the Solar Impulse visits the U.S. -- touching down in Phoenix, Dallas, New York, and other cities.
Adventurers discuss the challenges they face in their bid to become first to circumnavigate the globe without fossil fuel in the Solar Impulse, a solar-powered plane that can fly at night.