Science! (5 Viewers)

Deep in the hostile waters off Canada’s west coast, in a narrow channel surrounded by fjords, lies a coral reef that scientists believe “shouldn’t exist”. The reef is the northernmost ever discovered in the Pacific Ocean and offers researchers a new glimpse into the resilience – and unpredictability – of the deep-sea ecosystems.

For generations, members of the Kitasoo Xai’xaisand Heiltsuk First Nations, two communities off the Central Coast region of British Columbia, had noticed large groups of rockfish congregating in a fjord system.

In 2021, researchers and the First Nations, in collaboration with the Canadian government, deployed a remote-controlled submersible to probe the depths of the Finlayson Channel, about 300 miles north-west of Vancouver.


On the last of nearly 20 dives, the team made a startling discovery – one that has only recently been made public.

“When we started to see the living corals, everyone was in doubt,” says Cherisse Du Preez, head of the deep-sea ecology program at Fisheries and Oceans Canada. “Then, when we saw the expansive fields of coral in front of us, everybody just let loose. There were a lot of pure human emotions.”

Despite existing in absolute darkness, the lights of the submersible captured the rich pinks, yellows and purples of the corals and sponges.

The following year, the team mapped Lophelia Reef, or q̓áuc̓íwísuxv, as it has been named by the Kitasoo Xai’xais and Heiltsuk First Nations. It is the country’s only known living coral reef.

The discovery marks the latest in a string of instances in which Indigenous knowledge has directed researchers to areas of scientific or historic importance. More than a decade ago, Inuk oral historian Louie Kamookak compared Inuit stories with explorers’ logbooks and journals to help locate Sir John Franklin’s lost ships, HMS Erebus and HMS Terror. In 2014, divers located the wreck of the Erebus in a spot Kamookak suggested they search, and using his directions found the Terror two years later.……

 
Researchers in China have built a new device that can create a laser beam out of sound particles.

The sound laser, developed by a team at Hunan Normal University in Changsha, is 10 times more powerful than any previous device that uses similar technology.

Unlike conventional lasers, which output light particles called photons in a narrow beam, the new laser emits sound particles called phonons.

As the acoustic analogue of optical lasers, the sound laser is also able to transmit information at high speeds.

The phonon laser’s ability to move through liquids without being distorted to the same extent as light-based lasers means it could prove more effective than current technologies in everything from biomedicine to underwater monitoring.…..

 
Researchers in China have built a new device that can create a laser beam out of sound particles.

The sound laser, developed by a team at Hunan Normal University in Changsha, is 10 times more powerful than any previous device that uses similar technology.

Unlike conventional lasers, which output light particles called photons in a narrow beam, the new laser emits sound particles called phonons.

As the acoustic analogue of optical lasers, the sound laser is also able to transmit information at high speeds.

The phonon laser’s ability to move through liquids without being distorted to the same extent as light-based lasers means it could prove more effective than current technologies in everything from biomedicine to underwater monitoring.…..

Next up, the phonon torpedo. When it detonates you hear Yoko Ono on high volume.
 
Puberty makes teenagers’ armpits smell of cheese, goat and even urine, scientists in Germany have discovered.

The particular chemical compounds that make up pubescent body odour have been singled out, should anyone want to bottle “eau du teenager”.

More usefully, the discovery could help the creation of deodorants that mask those particular smells. It has also explained why babies smell better.


The study compared infants under three years old with 14- to 18-year-olds and found teenagers had two particular chemical compounds that smell of sweat, urine, musk and sandalwood, which were not present in babies. Infants, on the other hand, had higher levels of a ketone that smells flowery and soapy.

Helene Loos, of the Friedrich-Alexander University in Germany, and her colleagues adapted T-shirts and babygrows with cotton pads sewn into the armpits. Children slept in these overnight after washing with odour-free products.

The pads from the teenagers’ armpits had two steroids present – 5alphaandrost-16-en-3-one and 5alphaandrost-16-en-3alpha-ol – which smell of sweat, urine, musk and sandalwood. They also had higher levels of six carboxylic acids, which give off unattractive smells including cheese, goat and wax.

Babies’ samples showed higher levels of the ketone alpha-isomethyl ionone, which smells of flowers and soap, with a hint of violet……

 

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