Demographics of north African human populations unravelled using genomic data and artificial intelligence

A new study places the origin of the Imazighen in the Epipaleolithic, more than twenty thousand years ago. The research concludes that the genetic origin of the current Arab population of north Africa is far more recent than previously believed, placing it in the seventh century AD. The team has designed an innovative demographic model that uses artificial intelligence to analyze the complete genomes of the two populations.

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Allergy cells' hidden secret

Known for their role in allergic reactions, mast cells have long been recognised as key players in our immune system. When they encounter allergens, they release chemicals that trigger typical allergy symptoms such as tissue swelling and inflammation. Now, researchers have discovered a hidden talent of mast cells: they can capture and use another type of immune cell called neutrophils. This surprising discovery sheds new light on how our immune system works, particularly during allergic reactions.

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Half a billion-year-old spiny slug reveals the origins of mollusks

Exceptional fossils with preserved soft parts reveal that the earliest mollusks were flat, armored slugs without shells. The new species, Shishania aculeata, was covered with hollow, organic, cone-shaped spines. The fossils preserve exceptionally rare detailed features which reveal that these spines were produced using a sophisticated secretion system that is shared with annelids (earthworms and relatives).

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Demographics of north African human populations unravelled using genomic data and artificial intelligence

A new study places the origin of the Imazighen in the Epipaleolithic, more than twenty thousand years ago. The research concludes that the genetic origin of the current Arab population of north Africa is far more recent than previously believed, placing it in the seventh century AD. The team has designed an innovative demographic model that uses artificial intelligence to analyze the complete genomes of the two populations.

from Latest Science News -- ScienceDaily https://ift.tt/RUBIQ3Y

Easy tool helps estimate fall risks

Researchers have developed a formula and easy-to-use assessment tool for estimating fall risks using a database of older adults. Preventing falls among older adults is expected to extend life expectancy and reduce medical and nursing care costs.

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Keeping skin healthy: New method provides molecular portrait of sebum production

Changes in gene expression in sebaceous glands have now been spatially mapped. The study documents at high resolution changes in gene expression in the course of sebum synthesis and identifies new candidates for the modulation of sebum production.

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North Sea oil and gas extraction spikes pollution by 10,000 percent, study finds

North Sea oil and gas extraction can cause pollution to spike by more than 10,000 percent within half a kilometer around off-shore sites, a study has found. The research has uncovered the true impact on Britain's seabed life -- with the number of species plummeting nearly 30 percent near platforms.

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