lift

When Should COVID School Restrictions Lift? Intense Debates Persist

by

Last Friday the Centers for Disease Control and Prevention announced a pivot in its guidelines for indoor mask wearing that suggests that more than two thirds of Americans no longer need to wear masks—including children in schools. “We want to give people a break from things like mask wearing when our levels are low and … Read more

Drones: Giving small flying craft barn owl-like tails may make them more efficient flyers

by

The barn owl’s tail has a surprisingly important role to play in making the bird more aerodynamic Physics 9 February 2022 By Christa Lesté-Lasserre A barn owl in flight Javier Fernandez Sanchez/Getty Images The barn owl’s tail plays an unexpected role in flight by making the bird more aerodynamic, which may have implications for drone … Read more

This Robotic Hand Is Precise Enough to Move a Microchip With Tweezers

by

Innovators at South Korea’s Ajou University have created a robotic hand that is capable of holding fragile objects like eggs. It can also crush cans and work with tools like tweezers and scissors.   An article published in Nature Communications explained all the details of the new technology. It weighs just under two and a half pounds … Read more