The rotary engine makes a comeback for cars and drones as gasoline gains popularity as a complement to electric motors.
Geely's new hybrid engine achieves record 48.41% thermal efficiency and 106 MPG, approaching Formula 1 performance levels.
As the United States marks its 250th anniversary, WTOP presents “250 Years of America,” a multipart series examining the innovations, breakthroughs and pivotal moments that have shaped the nation ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results