While some captive birds have been reported to be able to imitate human-made sounds, such as human words and coughs, ...

Chinese scientists developed an "enhanced high ... For example, a well-known headache for the Blackbird was engine oil leaks due to widening gaps between parts. These problems can fool the computer.

An image showing the Chinese bomber N-6H with a substantial ... and its carrier was the precursor to the SR-71 Blackbird aircraft, known as the M-21. The D-21's mission was to undertake ...