Share this credible answer with others. Simply paste this code into your blog or Web page:
Machines designed to fly in this way, called ornithopters, date to antiquity (c.400 BC) and models that are capable of flight have been known for more than 100 years.
|
Answer verified with
|
HighBeam gives you access to newspaper, magazine, and trade journal articles plus press releases, facts, information, and biographies from thousands of sources.