Michaellat Fri, 22 Nov 2024 19:56:15

Earth ring theory may shed light on an unexplained ancient climate event, scientists say
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Famously known for its extensive ring system, Saturn is one of four planets in our solar system that have the distinctive feature. And now, scientists hypothesize that Earth may have sported its own ring some 466 million years ago.

During the Ordovician Period, a time of significant changes for Earth’s life-forms, plate tectonics and climate, the planet experienced a peak in meteorite strikes. Nearly two dozen impact craters known to occur during this time were all within 30 degrees of Earth’s equator, signaling that the meteoroids may have rained down from a rocky ring around the planet, according to a study published September 12 in the journal Earth and Planetary Science Letters.
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“It’s statistically unusual that you would get 21 craters all relatively close to the equator. It shouldn’t happen. They should be randomly distributed,” said lead author Andrew Tomkins, a geologist and professor of Earth and planetary sciences at Monash University in Melbourne, Australia.

Not only does the new hypothesis shed light on the origins of the spike in meteorite impacts, but it also may provide an answer to a previously unexplained event: A global deep freeze, one of the coldest climate events in Earth’s history, may have been a result of the ring’s shadow.

Scientists are hoping to find out more about the possible ring. It could help answer the mysteries of Earth’s history as well as pose new questions about the influence an ancient ring could have had on evolutionary development, Tomkins said.

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Peteridevy Fri, 22 Nov 2024 18:17:30

Why this small city is the ‘eyeglasses capital’ of Japan
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Japan is famed for its skilled artisans, masters who maintain a commitment to tradition while modernizing production techniques in line with the development of new materials and processes.

Many places in the country have grown famous by focusing on specific crafts, from exquisite kimonos to perfectly designed knives. Among them is the small city of Sabae, in Fukui prefecture, about a 3.5-hour train ride from Tokyo.
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It’s widely known as Japan’s eyeglasses capital – and for good reason. Sabae produces over 90% of the frames manufactured in the country, according to the local government. Signs and objects shaped like eyeglasses can be found on city streets, and there’s even a museum and festival devoted to spectacles.
The art of making spectacles
Sabae, located on Japan’s main Honshu island near the city of Fukui, has been producing quality eyewear for more than a century.

It all started in 1905, when a local government official invited skilled eyeglasses artisans to come to the city to teach their craft, an attempt to create new opportunities for local farmers.

The move paid off. Today, Sabae has over 100 companies that collaborate to make pairs of glasses.

Though these studios use cutting-edge machinery to produce new frames made of metal and acetate, most stages still require the skilled hands and trained eyes of Sabae’s master artisans.

That includes Takeshi Yamae, a frame designer with Japanese brand Boston Club who has lived in the city for 17 years. He tells CNN one pair of glasses can involve more than 200 steps.

“I first design it, sketch it, then put it into my computer,” he says. “From the time I start designing, to the time I have the perfect product, it takes more than a year.”

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