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Take a tusk, drill holes, weave a rope – and change the course of history – The Guardian

Scientists have discovered the tool our stone-age ancestors used to manufacture rope – a milestone in technological development

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Forty thousand years ago, a stone-age toolmaker carved a curious instrument from mammoth tusk. Twenty centimetres long, the ivory strip has four holes drilled in it, each lined with precisely cut spiral incisions.
The purpose of this strange device was unclear when it was discovered in Hohle Fels cave in south-western Germany several years ago. It could have been part of a musical instrument or a religious object, it was suggested. But now scientists have concluded that it is the earliest known…

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The Orionids meteor shower peaks this week. Here’s how to see shooting stars from the dust of Halley’s Comet. – Business Insider Australia

The Orionids meteor shower is peaking this week, bringing about 15 to 20 shooting stars per hour.

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The Orionids meteor shower is peaking this week, bringing about 15 to 20 shooting stars per hour.
The meteors barrel into Earth’s atmosphere with unusual speed, travelling roughly 41 miles per second â” about 148,000 mph. In their rush, they often leave behind glowing trails of debris that shine in the sky for several seconds or even minutes. Some travel so fast that they explode into fireballs, creating prolonged bursts of light.
The Orionids streaks across the sky throughout October, but Tue…

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‘4 1/2 hours of mild anxiousness’: US spaceraft nears asteroid surface – Sydney Morning Herald

The mission calls for Osiris-Rex to shoot out pressurised nitrogen gas to stir up the surface, then suck up any loose pebbles or dust.

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It promised to be the most harrowing part of the mission, which began with a launch from Cape Canaveral back in 2016.
“Well only be kissing the surface with a short touch-and-go measured in just seconds, said the University of Arizona’s Heather Enos, the deputy scientist for the mission.
The sampling arm of the OSIRIS-REx spacecraft during a rehearsal for an approach to the “Nightingale” sample site on the surface of the asteroid Bennu. Credit:AP
A van-sized spacecraft with an Egyptian-inspir…

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This red light means “go” for medical discoveries – AlKhaleej Today

This red light means “go” for medical discoveries

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Hui-wang Ai (PhD) and Shen Zhang (PhD) from UVA have developed a simple and effective improvement on the fluorescent biosensors widely used in scientific and medical research. Photo credit: University of Virginia
With a small change to the color palette, researchers at the University of Virginia School of Medicine have made it easier for scientists to understand biological processes, track events in individual cells, unravel the mysteries of the disease, and develop new treatments.
Hui-wang A…

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