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Humans Have The Biological Toolkit to Have Venomous Saliva, Study Finds

Humans Have The Biological Toolkit to Have Venomous Saliva, Study Finds

Could humans ever evolve venom? It's highly unlikely that people will join  and  among the ranks of venomous animals, but new research reveals that humans do have the tool kit to produce venom - in fact, all reptiles and mammals do. This collection of flexible genes, particularly associated with the salivary glands in humans, explains how venom has evolved independently from nonvenomous ancestors more than 100 times in the animal kingdom."Essentially, we have all the building blocks in place," said study co-author Agneesh Barua, a doctoral student in evolutionary genetics at the Okinawa...

Mar 30
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Deadly 'Brain-Eating' Amoeba Slowly But Surely Expanding Its Footprint in The US

Deadly 'Brain-Eating' Amoeba Slowly But Surely Expanding Its Footprint in The US

Deadly "" infections have historically occurred in the Southern United States. But cases have been appearing farther north in recent years, likely because of , a new study finds. The study researchers, from the Centers for Disease Control and Prevention (CDC), examined cases of this brain-eating amoeba, known as Naegleria fowleri, over a four-decade period in the US.They found that, although the number of cases that occur each year has remained about the same, the geographic range of these cases has been shifting northward, with more cases popping up in Midwestern states than before.N....

Dec 18
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31,000-Year-Old Grave Reveals Oldest Known Baby Twin Burial in The World

31,000-Year-Old Grave Reveals Oldest Known Baby Twin Burial in The World

An ancient grave in Austria may represent the oldest burial of twins on record, a new study finds.The 31,000-year-old burial dates to the Upper Paleolithic (a period lasting from 40,000 to 10,000 years ago), also known as the Old Stone Age. One of the infants died shortly after birth, while his twin brother lived for about 50 days, or just over 7 weeks, according to analyses of both babies. A third infant, a 3-month-old, interred in a burial about 5 feet (1.5 meters) away is likely their cousin, according to the research, published online on 6 November in the journal .Researchers found the...

Nov 13
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Scientists Have Found The Molecule That Allows Bacteria to 'Exhale' Electricity

Scientists Have Found The Molecule That Allows Bacteria to 'Exhale' Electricity

For mouthless, lungless bacteria, breathing is a bit more complicated than it is for humans.We inhale oxygen and exhale ; Geobacter - a ubiquitous, groundwater-dwelling genus of bacteria - swallow up organic waste and 'exhale' electrons, generating a in the process. Those waste electrons always need somewhere to go (usually into a plentiful underground mineral like oxide), and Geobacter have an unconventional tool to make sure they get there."Geobacter breathe through what is essentially a giant snorkel, hundreds of times their size," Nikhil Malvankar, an assistant professor at Yale...

September 27, 2020
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Epic New Climate Record Shows Earth Barreling Toward 'Hothouse' State Not Seen in 50 Million Years

Epic New Climate Record Shows Earth Barreling Toward 'Hothouse' State Not Seen in 50 Million Years

Sixty-six million years ago, after a hit Earth with the explosive energy of roughly, a shroud of ash, dust and vaporized rock covered the sky and slowly rained down on the planet. As plant and animal species died en masse, tiny undersea amoebas called forams continued to reproduce, building sturdy shells out of calcium and other deep-sea minerals, just as they had for hundreds of millions of years. When each foram inevitably died - pulverized into seabed sediment - they kept a little piece of Earth's ancient history alive in their fossilized shells.For decades, scientists have studied those...

September 12, 2020
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