Researchers find Proteins that might Restore Damaged Sound-Detecting Cells in the Ear

Mouse cochlea with hair cells shown in green and auditory nerves shown in red. Credit: Doetzlhofer lab

Using genetic tools in mice, researchers at Johns Hopkins Medicine say they have identified a pair of proteins that precisely control when sound-detecting cells, known as hair cells, are born in the mammalian inner ear. The proteins, described in a report published June 12 in eLife, may hold a key to future therapies to restore hearing in people with irreversible deafness.

“Scientists in our field have long been looking for the molecular signals that trigger the formation of the hair cells that sense and transmit sound,” says Angelika Doetzlhofer, Ph.D., associate professor of neuroscience at the Johns Hopkins University School of Medicine...

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In the future, this Electricity-Free Tech could help Cool Buildings in Metropolitan Areas

A radiative cooling device developed by UB researchers on top of a stone bench.
The system helps cool its surroundings by absorbing heat from the air inside the box and transmitting that energy through the Earth’s atmosphere into outer space. Credit: University at Buffalo.

Engineers have designed a new system that can help cool buildings in crowded metropolitan areas without consuming electricity, an important innovation at a time when cities are working to adapt to climate change.

The system consists of a special material – an inexpensive polymer/aluminum film – that’s installed inside a box at the bottom of a specially designed solar “shelter.” The film helps to keep its surroundings cool by absorbing heat from the air inside the box and transmitting that energy through the Earth’s atmosphere into outer space...

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Magnetic Plasma Pulses Excited by UK-size Swirls in the Solar atmosphere

The sun
Evidence of ubiquitous Alfvén pulses transporting energy from the photosphere to the upper chromosphereNature Communications, 2019; 10 (1) DOI: 10.1038/s41467-019-11495-0

An international team of scientists led by the University of Sheffield have discovered previously undetected observational evidence of frequent energetic wave pulses the size of the UK, transporting energy from the solar surface to the higher solar atmosphere.

Magnetic plasma waves and pulses have been widely suggested as one of the key mechanisms which could answer the long-standing question of why the temperature of the solar atmosphere rises dramatically, from thousands to millions of degrees, as you move away from the solar surface.

There have been many theories put forward, including some developed at ...

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You can’t Squash this Roach-Inspired Robot

Weight-bearing, slope-climbing, and load-carrying capabilities.(A to C) Soft robot can continue to function (one-half of the original speed) after being stepped on by an adult human (59.5 kg), a load about 1 million times its own body weight. Scale bars, 3 cm. A robot climbs a slope (D) of 7.5° with a relative speed of 7 BL/s and a slope (E) of 15.6° with a relative speed of 1 BL/s. Scale bars, 1 cm. (F and G) A robot (0.064 g) carries a peanut (0.406 g), which is six times its own body weight, to show the load-carrying capability. The speed with the peanut on top is about one-six of the original speed without the peanut. Scale bars, 1 cm.

Insect-sized device scurries at the speed of a cockroach and can withstand the weight of a human...

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