Tag: quieter
Leonardo da Vinci’s ‘helicopter’ design could make drones quieter
Leonardo da Vinci’s sketch of the aerial screwGianni Dagli Orti/Shutterstock A recent study suggests that a flying machine…
Expect a quieter Jan. 6 this time around — as long as Republicans avert a looming speakership crisis
Donald Trump's victory in the upcoming presidential transition has brought a sense of normalcy back to the political…