A proposed Mars helicopter mission would search for signs of life, water and future human footholds in a vast volcanic canyon ...

The U.S. Army ordered 65 of the 47Ds, which it dubbed the H-13 Sioux, while the Navy ordered 12, which it designated HTL-2.

The probability of a bird strike in that area at that time was deemed to be low, according to the NTSB report.

The National Transportation Safety Board has released the cause the cause of a helicopter crash that killed ... a potential risk for a bird strike would not have been detected.

LYNCHBURG, Va. (WSET) — You might have heard it overnight: the loud rumbling of helicopters hanging low in the night sky in the Lynchburg area. We heard it too! The racket was from helicopters ...

(Dominique Faget/AFP via Getty Images) Bird flu is at a dangerous point in the United States: Nearly 167 million birds have been impacted by the H5N1 strain since 2022, and 70 people have been ...

Engineers in Somerset are building a helicopter that is set to fly itself - without the need for humans to operate it remotely - in a research project for the Royal Navy. There have been ...

Pitch determines how high or low a sound is — for example, the chirp of a bird versus the growl of a dog. Harmonic structure defines tonal quality, distinguishing a piano note from a frog’s croak.

The Centers for Disease Control and Prevention and other researchers have found little to no evidence of past infections with H5N1 bird flu when they analyzed blood samples from the general ...