Engineers at Stanford University in California found that Anna's Hummingbird (pictured) is more efficient than the best micro helicopter Think ... spin their wings to hover, it would cost them ...

the Hoverbike is essentially half helicopter, half motorcycle. Story and editing by Carl Mueller Follow INSIDER on Facebook Follow INSIDER on YouTube Jump to ...

From 12,000 feet in the air, he exited a Bell 212 helicopter with a parachute and ... between the twin towers of Viña del Mar ...