Skip to Content

Fresh Air

A new device may bring fresh air to people who live or work in city buildings – without letting in the noise from traffic. Developed by Chris Field, senior acoustic consultant at the Sydney, Australia, offices of engineering firm Arup, and Fergus Fricke, honorary associate professor at the University of Sydney, the polycarbonate brick has a channel cut through it that allows air to flow through. To stop street noise from doing the same, small tubular cavities lead off the channel. The air flowing over the mouths of the cavities causes them to resonate, creating small differences in pressure that scatter the sound waves, dissipating most of the traffic noise before it reaches the end of the channel. Field and Fricke claim the device cuts inbound noise by 85 percent, and they’ve licensed the technology to Silenceair in New South Wales, Australia.

Keep Reading

Most Popular

computation concept
computation concept

How AI is reinventing what computers are

Three key ways artificial intelligence is changing what it means to compute.

still from Embodied Intelligence video
still from Embodied Intelligence video

These weird virtual creatures evolve their bodies to solve problems

They show how intelligence and body plans are closely linked—and could unlock AI for robots.

We reviewed three at-home covid tests. The results were mixed.

Over-the-counter coronavirus tests are finally available in the US. Some are more accurate and easier to use than others.

conceptual illustration showing various women's faces being scanned
conceptual illustration showing various women's faces being scanned

A horrifying new AI app swaps women into porn videos with a click

Deepfake researchers have long feared the day this would arrive.

Stay connected

Illustration by Rose WongIllustration by Rose Wong

Get the latest updates from
MIT Technology Review

Discover special offers, top stories, upcoming events, and more.

Thank you for submitting your email!

Explore more newsletters

It looks like something went wrong.

We’re having trouble saving your preferences. Try refreshing this page and updating them one more time. If you continue to get this message, reach out to us at customer-service@technologyreview.com with a list of newsletters you’d like to receive.