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Human Saliva Has Potential to Evolve Into Venom

Snakes hang from a wooden cabinet marked with the Chinese characters "poisonous snake", at a snake soup shop ahead of the Spring Festival in Hong Kong. Photo: Reuters
Snakes hang from a wooden cabinet marked with the Chinese characters "poisonous snake", at a snake soup shop ahead of the Spring Festival in Hong Kong. Photo: Reuters
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Human Saliva Has Potential to Evolve Into Venom

Snakes hang from a wooden cabinet marked with the Chinese characters "poisonous snake", at a snake soup shop ahead of the Spring Festival in Hong Kong. Photo: Reuters
Snakes hang from a wooden cabinet marked with the Chinese characters "poisonous snake", at a snake soup shop ahead of the Spring Festival in Hong Kong. Photo: Reuters

Humans have the potential to become venomous due the genetic similarities between our saliva glands and a snake's venom glands, say scientists.

A joint research team from Japan's Okinawa Institute of Science and Technology Graduate University (OIST) and the Australian National University, found that the genetic foundation required for oral venom to evolve is present in both reptiles and mammals.

Reporting this in the journal PNAS on April 6, the researchers provided the first concrete evidence of an underlying molecular link between venom glands in snakes and salivary glands in mammals.

Venoms are a cocktail of proteins that animals have weaponized to immobilize and kill prey, as well as for self-defense. What's interesting about venom is that it has arisen in so many different animals: jellyfish, spiders, scorpions, snakes, and even some mammals. Although these animals evolved different ways to deliver venom, an oral system, where venom is injected through a bite is one of the most common.

In the study, the team looked at the genes that played important roles in protecting the cells from stress caused by producing lots of proteins. The genes were also key in regulating protein modification and folding. The scientists used venom glands collected from the Taiwan habu snake, a pit viper found in Asia.

The researchers identified around 3,000 of these 'cooperating' genes. Then, they studied the genomes of other creatures across the animal kingdom, including mammals like dogs, chimpanzees and humans, and found that they contained their own versions of these genes.

When the team looked at the salivary gland tissues within mammals, they found that the genes had a similar pattern of activity to that seen in snake venom glands. The scientists therefore think that salivary glands in mammals and venom glands in snakes share an ancient functional core that has been maintained since the two lineages split hundreds of millions of years ago.

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Varieties

Swiss Author Erich von Daeniken Dies at 90

Erich von Daeniken, co-founder and co-owner of Mystery Park, poses in front of the Panorama Tower at Mystery Park in Interlaken, Wednesday, April 23, 2003. (Gaetan Ball)/Keystone via AP, File)
Erich von Daeniken, co-founder and co-owner of Mystery Park, poses in front of the Panorama Tower at Mystery Park in Interlaken, Wednesday, April 23, 2003. (Gaetan Ball)/Keystone via AP, File)
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Swiss Author Erich von Daeniken Dies at 90

Erich von Daeniken, co-founder and co-owner of Mystery Park, poses in front of the Panorama Tower at Mystery Park in Interlaken, Wednesday, April 23, 2003. (Gaetan Ball)/Keystone via AP, File)
Erich von Daeniken, co-founder and co-owner of Mystery Park, poses in front of the Panorama Tower at Mystery Park in Interlaken, Wednesday, April 23, 2003. (Gaetan Ball)/Keystone via AP, File)

Swiss author Erich von Daeniken, who helped popularize the idea that astronauts from outer space visited Earth ​to help lay the foundations for human civilization, has died aged 90.

Swiss media including national broadcaster SRF reported his death, and a note on his website said it occurred on Saturday, The AP news reported.

Von Daeniken rose to ‌prominence with ‌his 1968 book "Chariots of ‌the ⁠Gods?" ​which posited ‌that structures such as the pyramids of Ancient Egypt, Britain's Stonehenge and Peru's Nazca lines were too advanced for their time, and needed outside help.

"In my opinion, ancient structures were made ⁠by humans, not by the extraterrestrials, but it was ‌the extraterrestrials who guided them, ‍who them, ‍who gave them the knowledge how to ‍do it," von Daeniken says in a video on his YouTube channel.

His theories were controversial with historians, scientists and fellow ​writers. But they were popular, and his books, which included "The Gods were ⁠Astronauts", sold nearly 70 million copies worldwide, appearing in more than 30 languages, SRF said.

Von Daeniken argued that ancient religions, myths and art contained evidence that millennia ago, the ancestors of modern humans had made contact with advanced extraterrestrial beings who appeared godlike to them and enabled them to progress.

One ‌day, von Daeniken said, those beings would return.

Varieties

Massive Iconic Iceberg 'on Verge of Complete Disintegration'

Iceberg A23a has turned blue and is “on the verge of complete disintegration,” NASA said. This photo was taken on December 26, 2025 (NASA)
Iceberg A23a has turned blue and is “on the verge of complete disintegration,” NASA said. This photo was taken on December 26, 2025 (NASA)
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Massive Iconic Iceberg 'on Verge of Complete Disintegration'

Iceberg A23a has turned blue and is “on the verge of complete disintegration,” NASA said. This photo was taken on December 26, 2025 (NASA)
Iceberg A23a has turned blue and is “on the verge of complete disintegration,” NASA said. This photo was taken on December 26, 2025 (NASA)

One of the largest and oldest icebergs ever tracked by scientists has turned blue and is “on the verge of complete disintegration,” NASA said on Thursday.

A23a, a massive wall of ice that was once twice the size of Rhode Island, is drenched in blue meltwater as it drifts in the South Atlantic off the eastern tip of South America, NASA said in a new release, according to CBS News.

A NASA satellite captured an image of the fading berg the day after Christmas, showing pools of blue meltwater on its surface. A day later, an astronaut aboard the International Space Station captured a photograph showing a closer view of the iceberg, with an even larger melt pool.

The satellite image suggests that the A23a has also “sprung a leak,” NASA said, as the weight of the water pooling at the top of the berg punched through the ice.

Scientists say all signs indicate the so-called “megaberg” could be just days or weeks from totally disintegrating as it rides currents that are pushing it toward even warmer waters.

Warmer air temperatures during this season could also speed up A23a's demise in an area that ice experts have dubbed a “graveyard” for icebergs.

“I certainly don't expect A-23A to last through the austral summer,” retired University of Maryland, Baltimore County scientist Chris Shuman said in a statement.

Blue and white linear patterns visible on A23a are likely related to striations, which are ridges that were scoured hundreds of years ago when the iceberg was part of the Antarctic bedrock, NASA said.

“The striations formed parallel to the direction of flow, which ultimately created subtle ridges and valleys on the top of the iceberg that now direct the flow of meltwater,” said Walt Meier, a senior research scientist at the National Snow & Ice Data Center.

The berg detached from Antarctica in 1986. It remained stuck for over 30 years before finally breaking free in 2020.

According to current estimates from the US National Ice Center, in early January 2026, the berg's area is 1,182 square kilometers -- still larger than New York City but a fraction of its initial size.

Varieties

Scores of Homes Razed, One Dead in Australian Bushfires

Smoke rises from a burning forest on a hillside behind a home near Longwood as bushfires continue to burn under severe fire weather conditions in Longwood, Victoria, Australia, January 9, 2026. AAP/Michael Currie via REUTERS
Smoke rises from a burning forest on a hillside behind a home near Longwood as bushfires continue to burn under severe fire weather conditions in Longwood, Victoria, Australia, January 9, 2026. AAP/Michael Currie via REUTERS
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Scores of Homes Razed, One Dead in Australian Bushfires

Smoke rises from a burning forest on a hillside behind a home near Longwood as bushfires continue to burn under severe fire weather conditions in Longwood, Victoria, Australia, January 9, 2026. AAP/Michael Currie via REUTERS
Smoke rises from a burning forest on a hillside behind a home near Longwood as bushfires continue to burn under severe fire weather conditions in Longwood, Victoria, Australia, January 9, 2026. AAP/Michael Currie via REUTERS

Bushfires have razed hundreds of buildings across southeast Australia, authorities said Sunday, as they confirmed the first death from the disaster.

Temperatures soared past 40C as a heatwave blanketed the state of Victoria, sparking dozens of blazes that ripped through more than 300,000 hectares (740,000 acres) combined.

Fire crews tallied the damage as conditions eased on Sunday. A day earlier, authorities had declared a state of disaster.

Emergency Management Commissioner Tim Wiebusch said over 300 buildings had burned to the ground, a figure that includes sheds and other structures on rural properties, AFP reported.

More than 70 houses had been destroyed, he said, alongside huge swathes of farming land and native forest.

"We're starting to see some of our conditions ease," he told reporters.

"And that means firefighters are able to start getting on top of some of the fires that we still have in our landscape."

Police said one person had died in a bushfire near the town of Longwood, about two hours' drive north of state capital Melbourne.

"This really takes all the wind out of our sails," said Chris Hardman from Forest Fire Management Victoria.

"We really feel for the local community there and the family, friends and loved ones of the person that is deceased," he told national broadcaster ABC.

Photos taken this week showed the night sky glowing orange as the fire near Longwood tore through bushland.

"There were embers falling everywhere. It was terrifying," cattle farmer Scott Purcell told ABC.

Another bushfire near the small town of Walwa crackled with lightning as it radiated enough heat to form a localized thunderstorm.

Hundreds of firefighters from across Australia have been called in to help.

Australian Prime Minister Anthony Albanese said he was talking with Canada and the United States for possible extra assistance.

Millions have this week sweltered through a heatwave blanketing much of Australia.

High temperatures and dry winds combined to form some of the most dangerous bushfire conditions since the "Black Summer" blazes.

The Black Summer bushfires raged across Australia's eastern seaboard from late 2019 to early 2020, razing millions of hectares, destroying thousands of homes and blanketing cities in noxious smoke.

Australia's climate has warmed by an average of 1.51C since 1910, researchers have found, fueling increasingly frequent extreme weather patterns over both land and sea.

Australia remains one of the world's largest producers and exporters of gas and coal, two key fossil fuels blamed for global heating.