Dry maple seeds on their branch. Their wings allow the seeds to spin and glide on the wind, carrying them away from their parent tree. Every other Friday, the Outside/In team here at NHPR answers ...

Helicopters are among the most sophisticated aircraft the world of aviation has on offer. While fixed-wing aircraft, such as jetliners and fighter jets, have been known to carry more passengers or ...

WWII helicopters were used for troop transport, casualty evac, airborne command posts, SAR operations, and attacking ground ...