This adorable two-legged drone looks straight out of a Hayao Miyazaki movie
A team of scientists looked for inspiration in nature to create drones that are 10 times more efficient at takeoff.
NBC News5 天
Large mystery drones flying over neighborhoods in New York and New Jersey
Swarms of large drones, some described as big as cars, are flying over neighborhoods in New Jersey and New York. One even flew over a meeting of Pentagon leaders in California. NBC News' George ...