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NASA acoustic testing puts real numbers on Joby’s eVTOL noise signature

eVTOL makers say these electric air taxis will be so much quieter than helicopters that they'll be able to put hundreds of them in the air without annoying city residents. Well, let's see – Joby Aviation and NASA have released acoustic test figures.

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World’s most powerful X-ray laser now fires a million bursts per second

The world’s most powerful X-ray laser is ready for operation after a massive overhaul. The upgraded LCLS-II uses temperatures colder than deep space to accelerate electrons to near light-speed and fire off a million X-ray bursts per second.

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Brain imaging helmet tracks psychedelic experiences in ketamine study

An ongoing study is testing a new kind of neuroimaging device designed to easily capture brain activity in real-time. These experiments will investigate the effects of ketamine on functional connectivity in the brain before, during and after an experience.

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Cells’ trash disposal system shapes as a “toggle” for cancer treatment

Research from MIT has shown how natural cellular cleaning systems are ramped up during cell division, with the newly discovered mechanism potentially offering scientists a "toggle" for treating different kinds of diseases.

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Specialized’s workhorse ebikes incentivize bike rides over car rides

One of the world's largest bicycle brands ups its ebike game with a dedicated brand encouraging commuters to ditch the car and get on an electric bike. Specialized's Globe brand will carry the torch of getting more butts into ebike saddles.

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Saab’s Sirius Compact warfare sensor stays stealthy, locates threats

Saab has introduced a passive, lightweight, electronic warfare sensor called Sensor Compact, which is designed to act alone or in an array to locate incoming threats on a variety of tactical levels without revealing its presence.

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Experts divided over who should get a 4th COVID vaccine dose

Two new studies indicate a fourth COVID-19 vaccine dose can substantially boost immunity and reduce risk of infection compared to triple-dosed individuals but experts are divided on whether all age groups should be offered the extra booster.

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