The flight of Solar Impulse 2 is a huge achievement for clean energy.
A solar-powered, single-pilot airplane just made aviation (and renewable energy) history, completing the 4,000-mile journey
Aviation history is in the making -- no fossil fuels necessary. Solar flight may seem slow, expensive, and downright impractical
Later this month, Solar Impulse will fly from St. Louis to Washington, D.C. The fifth and last leg of the trip will end in
After additional stops in Dallas, St. Louis and Washington, D.C., with pauses at each destination to wait for favorable weather
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The team hopes that the Solar Impulse will eventually become the first solar airplane circumnavigate the globe, flying 36
Alps Crossing from Solar Flight on Vimeo. Michael Graham Richard of Treehugger sent over some awesome video of a solar plane