Poking our friends or teasing them is not just a human past time it is probably something that we got our primate ancestors from the great apes. A new study has said that Apes in fact tease each other in pretty much the same way as human children do.

Study: Apes like to tease their friends

<p data-analytics-observe="off" data-component-name="paragraph" data-editable="text" data-uri="archive.cms.cnn.com/_components/paragraph/instances/paragraph_185C66FD-D4E6-5C38-0B3F-F4F8A3D1E32D@published">Human teens and chimpanzee teens show similar characteristics, except human teens can be more impulsive, according to a new study published in the Journal of Experimental Psychology: General by the American Psychological Association. The researchers played games with 40 chimpanzees raised in the wild while they were housed in a sanctuary in the Republic of Congo. These games evaluated the animals' propensity for impulsivity and risk-taking.

<p data-analytics-observe="off" data-component-name="paragraph" data-editable="text" data-uri="archive.cms.cnn.com/_components/paragraph/instances/paragraph_185C66FD-D4E6-5C38-0B3F-F4F8A3D1E32D@published">“Human adolescents are grappling with changing bodies and brains, and tend to be more impulsive, risk-seeking, and less able to regulate emotions than adults,” said lead study author Dr. Alexandra Rosati, associate professor of psychology and anthropology at the University of Michigan, via email to CNN. “Chimpanzees face many of the same kinds of challenges as humans as they grow up," she added.

<p data-analytics-observe="off" data-component-name="paragraph" data-editable="text" data-uri="archive.cms.cnn.com/_components/paragraph/instances/paragraph_185C66FD-D4E6-5C38-0B3F-F4F8A3D1E32D@published">Also read |&nbsp;<a href="https://www.wionews.com/science/in-a-major-breakthrough-scientists-discover-new-plant-toxin-highly-potent-in-killing-bacteria-557230">In a major breakthrough, scientists discover new plant toxin highly potent in killing bacteria</a>

<p data-analytics-observe="off" data-component-name="paragraph" data-editable="text" data-uri="archive.cms.cnn.com/_components/paragraph/instances/paragraph_185C66FD-D4E6-5C38-0B3F-F4F8A3D1E32D@published">Adolescence in chimpanzees, according to the study, lasts for between eight to fifteen years out of a lifetime of fifty. Similar to human adolescents, they go through fast hormonal changes, form new social relationships, become more aggressive, and compete for social status.

<p data-analytics-observe="off" data-component-name="paragraph" data-editable="text" data-uri="archive.cms.cnn.com/_components/paragraph/instances/paragraph_185C66FD-D4E6-5C38-0B3F-F4F8A3D1E32D@published">Teenage chimpanzees are less often studied than newborns and adults, according to Dr. Aaron Sandel, an assistant professor of anthropology at the University of Texas at Austin who spoke to CNN and is&nbsp;involved in the present study.

<p data-analytics-observe="off" data-component-name="paragraph" data-editable="text" data-uri="archive.cms.cnn.com/_components/paragraph/instances/paragraph_185C66FD-D4E6-5C38-0B3F-F4F8A3D1E32D@published">Also read |&nbsp;<a href="https://www.wionews.com/science/a-bear-on-mars-this-satellite-image-of-mars-surface-stuns-netizens-557102">A bear on Mars? This satellite image of Mars surface stuns netizens</a>

<p data-analytics-observe="off" data-component-name="paragraph" data-editable="text" data-uri="archive.cms.cnn.com/_components/paragraph/instances/paragraph_55FD31D7-CDAD-95E7-BDD4-F4F9F881F636@published">“For a while, there was a pretty big gap in the literature on (chimpanzee) adolescents,” Sandel said, noting that researchers often don’t focus on this period. Scientists may avoid studying teen chimps because their own human experiences with teenage years are complicated, he said.&nbsp;

Young chimpanzees were equally willing to wait for a bigger delayed reward as they were to take risks in their games, as per the study.

The study also pointed out that human teenagers are known to be more inclined to accept a smaller, more immediate reward.

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Human teens and chimpanzee teens show similar characteristics, except human teens can be more impulsive, according to a new study published in the Journal of Experimental Psychology: General by the American Psychological Association.

Human teens and chimpanzee teens show similar characteristics, except human teens can be more impulsive, according to a new study published in the Journal of Experimental Psychology: General by the American Psychological Association. The researchers played games with 40 chimpanzees raised in the wild while they were housed in a sanctuary in the Republic of Congo. These games evaluated the animals' propensity for impulsivity and risk-taking. “Human adolescents are grappling with changing bodies and brains, and tend to be more impulsive, risk-seeking, and less able to regulate emotions than adults,” said lead study author Dr. Alexandra Rosati, associate professor of psychology and anthropology at the University of Michigan, via email to CNN. “Chimpanzees face many of the same kinds of challenges as humans as they grow up," she added. Also read | In a major breakthrough, scientists discover new plant toxin highly potent in killing bacteria Adolescence in chimpanzees, according to the study, lasts for between eight to fifteen years out of a lifetime of fifty. Similar to human adolescents, they go through fast hormonal changes, form new social relationships, become more aggressive, and compete for social status. Teenage chimpanzees are less often studied than newborns and adults, according to Dr. Aaron Sandel, an assistant professor of anthropology at the University of Texas at Austin who spoke to CNN and is involved in the present study. Also read | A bear on Mars? This satellite image of Mars surface stuns netizens “For a while, there was a pretty big gap in the literature on (chimpanzee) adolescents,” Sandel said, noting that researchers often don’t focus on this period. Scientists may avoid studying teen chimps because their own human experiences with teenage years are complicated, he said. Young chimpanzees were equally willing to wait for a bigger delayed reward as they were to take risks in their games, as per the study. The study also pointed out that human teenagers are known to be more inclined to accept a smaller, more immediate reward. WATCH WION LIVE HERE:

Teen chimpanzees, adolescent humans display similar risk-taking behaviour: Study

Enormous megatooth sharks, or megalodons, gave birth to babies larger than most adult humans, researchers have said.

Formally known as Otodus megalodon, these sharks patrolled the world’s oceans more than three million years ago.

The gigantic fish rank among the largest carnivores in the history of life on Earth. Scientists have uncovered plenty of fossils, but megalodon biology is poorly understood because the teeth are often all that remains of the cartilaginous creatures.

Scientists discovered this when they X-rayed the vertebra of a fossilised megalodon and found that it must have been about two metres (6.5 ft) long when it was born. Their remnants have revealed that adults grew to more than 15 metres in length, but until now their size at birth was unclear.

Also, scientists took CT scans of a rare megalodon vertebra kept in a collection at the Royal Belgian Institute of Natural Sciences in Brussels. The 15cm (6in) wide fossil was estimated to come from a megalodon nine-metres long.

Scientists have believed growth bands on an animal's body indicate their age in years, much as tree rings reveal annual growth in trees. In this particular case, the scans revealed 46 growth bands in the fossil. The researchers hence estimated that the newborn megalodon reached two metres from nose to tail.

They concluded the typical lifespan of the species was at least 88 years.

Enormous megatooth sharks, or megalodons, gave birth to babies larger than most adult humans, researchers have said. Formally known as Otodus megalodon, these sharks patrolled the world’s oceans more than three million years ago.

Enormous megatooth sharks, or megalodons, gave birth to babies larger than most adult humans, researchers have said. Formally known as Otodus megalodon, these sharks patrolled the world’s oceans more than three million years ago. The gigantic fish rank among the largest carnivores in the history of life on Earth. Scientists have uncovered plenty of fossils, but megalodon biology is poorly understood because the teeth are often all that remains of the cartilaginous creatures. Scientists discovered this when they X-rayed the vertebra of a fossilised megalodon and found that it must have been about two metres (6.5 ft) long when it was born. Their remnants have revealed that adults grew to more than 15 metres in length, but until now their size at birth was unclear. Also, scientists took CT scans of a rare megalodon vertebra kept in a collection at the Royal Belgian Institute of Natural Sciences in Brussels. The 15cm (6in) wide fossil was estimated to come from a megalodon nine-metres long. Scientists have believed growth bands on an animal's body indicate their age in years, much as tree rings reveal annual growth in trees. In this particular case, the scans revealed 46 growth bands in the fossil. The researchers hence estimated that the newborn megalodon reached two metres from nose to tail. They concluded the typical lifespan of the species was at least 88 years.

Newborn megalodons were larger than humans, researchers say

When they’re hungry, they’ll let you know by coming up to you and looking beseechingly at you and the container of food.

If that doesn’t work, they’ll sniff and paw at your leg.

No, we’re not talking about dogs. We’re talking about kangaroos.

Researchers at the University of Roehampton in Britain and the University of Sydney in Australia say that such behavior led them to a startling discovery: Kangaroos can communicate with humans similar to the way dogs, horses and goats do despite never having been domesticated.

Also read|&nbsp;<a href="https://www.wionews.com/science/will-ghost-sharks-vanish-before-scientists-can-study-them-350830" hreflang="en">Will ghost sharks vanish before scientists can study them?</a>

Kangaroos are the first wild animal to exhibit a behavior that is more commonly seen in domesticated species, communicating requests for help from a human, the researchers said. Up until now, researchers had hypothesized that this kind of interspecies communication had existed only in animals that had evolved alongside humans.

The study suggests a higher level of intelligence in the Australian marsupials than had been assumed.

The researchers said they hoped the results would persuade people — especially Australians — to treat kangaroos with more care. Although they’re on the country’s coat of arms and are considered something of a national treasure, they’re also seen as a nuisance and are culled annually because of their overabundance.

There were nearly 50 million kangaroos across Australia in 2017, double the human population, according to official estimates. Farmers complain that kangaroos eat pastures meant for livestock, while researchers worry they are a threat to endangered wildlife by destroying habitat and eating reptiles.

“There’s a part of the population that thinks they’re pests and dumb and want to shoot them,” said Alan McElligott, lead author of the paper. “I think if the broader public has a greater understanding of the cognitive abilities of an animal, it’s easier to sell the idea that we should treat them with the best possible care.”

Also read|&nbsp;<a href="https://www.wionews.com/science/a-dinosaur-with-hair-and-ribbons-leaves-researchers-intrigued-350066" hreflang="en">A dinosaur with 'hair' and 'ribbons' leaves researchers intrigued</a>

The researchers trained and tested 11 kangaroos from Australian zoos over eight days last year to get food out of a box. Then they locked the box, making it impossible for them to gain access to the food without help.

Initially, the kangaroos sniffed and scratched at the box. But once they realized they couldn’t open it, they turned their attention to McElligott, who was in the enclosure with them.

“The kangaroos looked up at me and they did this sort of gaze alternation — looking at the box, back at me, back at the box, back at me,” said McElligott, who formerly worked at the University of Roehampton and is now an associate professor at the City University of Hong Kong.

“A few of the kangaroos approached me and started sniffing my knee and scratching my knee,” he added. “If it was a dog you’d call it pawing.”

Ten of the 11 kangaroos involved in the study actively looked at McElligott, and nine alternated between looking at him and the box containing the food.

“They were really trying to intentionally communicate their desire to get him to help get the food out of the box,” said Alexandra Green, an animal behavior and welfare researcher at the University of Sydney, who is the paper’s co-author.

Green says she believes that the kangaroo’s behavior is a modification of how they communicate with one another in the wild.

“They’re a social species and would use these cues among each other,” she said. “In a captive setting, where there’s humans present, they’re probably able to adapt this ability to communicate with humans.”

The kangaroos used in the study — which was published Wednesday in Biology Letters, a peer-reviewed, scientific journal published by the Royal Society — weren’t fully wild, since that would have been dangerous to the researchers. They had been raised in zoos and were familiar with humans, but were still considered undomesticated.

McElligott said that in a similar study done with wolves, another undomesticated animal, the wolves simply attacked the food boxes with their teeth instead of making any attempt to ask humans for help.

When they’re hungry, they’ll let you know by coming up to you and looking beseechingly at you and the container of food. If that doesn’t work, they’ll sniff and paw at your leg.

When they’re hungry, they’ll let you know by coming up to you and looking beseechingly at you and the container of food. If that doesn’t work, they’ll sniff and paw at your leg. No, we’re not talking about dogs. We’re talking about kangaroos. Researchers at the University of Roehampton in Britain and the University of Sydney in Australia say that such behavior led them to a startling discovery: Kangaroos can communicate with humans similar to the way dogs, horses and goats do despite never having been domesticated. Also read| Will ghost sharks vanish before scientists can study them? Kangaroos are the first wild animal to exhibit a behavior that is more commonly seen in domesticated species, communicating requests for help from a human, the researchers said. Up until now, researchers had hypothesized that this kind of interspecies communication had existed only in animals that had evolved alongside humans. The study suggests a higher level of intelligence in the Australian marsupials than had been assumed. The researchers said they hoped the results would persuade people — especially Australians — to treat kangaroos with more care. Although they’re on the country’s coat of arms and are considered something of a national treasure, they’re also seen as a nuisance and are culled annually because of their overabundance. There were nearly 50 million kangaroos across Australia in 2017, double the human population, according to official estimates. Farmers complain that kangaroos eat pastures meant for livestock, while researchers worry they are a threat to endangered wildlife by destroying habitat and eating reptiles. “There’s a part of the population that thinks they’re pests and dumb and want to shoot them,” said Alan McElligott, lead author of the paper. “I think if the broader public has a greater understanding of the cognitive abilities of an animal, it’s easier to sell the idea that we should treat them with the best possible care.” Also read| A dinosaur with 'hair' and 'ribbons' leaves researchers intrigued The researchers trained and tested 11 kangaroos from Australian zoos over eight days last year to get food out of a box. Then they locked the box, making it impossible for them to gain access to the food without help. Initially, the kangaroos sniffed and scratched at the box. But once they realized they couldn’t open it, they turned their attention to McElligott, who was in the enclosure with them. “The kangaroos looked up at me and they did this sort of gaze alternation — looking at the box, back at me, back at the box, back at me,” said McElligott, who formerly worked at the University of Roehampton and is now an associate professor at the City University of Hong Kong. “A few of the kangaroos approached me and started sniffing my knee and scratching my knee,” he added. “If it was a dog you’d call it pawing.” Ten of the 11 kangaroos involved in the study actively looked at McElligott, and nine alternated between looking at him and the box containing the food. “They were really trying to intentionally communicate their desire to get him to help get the food out of the box,” said Alexandra Green, an animal behavior and welfare researcher at the University of Sydney, who is the paper’s co-author. Green says she believes that the kangaroo’s behavior is a modification of how they communicate with one another in the wild. “They’re a social species and would use these cues among each other,” she said. “In a captive setting, where there’s humans present, they’re probably able to adapt this ability to communicate with humans.” The kangaroos used in the study — which was published Wednesday in Biology Letters, a peer-reviewed, scientific journal published by the Royal Society — weren’t fully wild, since that would have been dangerous to the researchers. They had been raised in zoos and were familiar with humans, but were still considered undomesticated. McElligott said that in a similar study done with wolves, another undomesticated animal, the wolves simply attacked the food boxes with their teeth instead of making any attempt to ask humans for help.

‘A social species’: How kangaroos communicate with people

A new study has claimed that Kangaroos can learn to communicate with humans similar to how domesticated dogs do.

Kangaroos can use their gaze to "point" and ask for help, researchers said in a study published on Wednesday.

The study involved 11 kangaroos that lived in captivity but had not been domesticated. Ten of the 11 marsupials intently gazed at researchers when they were unable to open a box with food, according to the report.&nbsp;

Nine alternately looked at the human and at the container, as a way of pointing or gesturing toward the object.

The findings challenge the notion that only domesticated animals such as dogs, horses or goats communicate with humans, and suggests many more animals could grasp how to convey meaning to humans, the paper asserts.

"It's more likely to be a learned behaviour when the environment is right," researchers say.

A new study has claimed that Kangaroos can learn to communicate with humans similar to how domesticated dogs do. Kangaroos can use their gaze to "point" and ask for help, researchers said in a study published on Wednesday.

A new study has claimed that Kangaroos can learn to communicate with humans similar to how domesticated dogs do. Kangaroos can use their gaze to "point" and ask for help, researchers said in a study published on Wednesday. The study involved 11 kangaroos that lived in captivity but had not been domesticated. Ten of the 11 marsupials intently gazed at researchers when they were unable to open a box with food, according to the report. Nine alternately looked at the human and at the container, as a way of pointing or gesturing toward the object. The findings challenge the notion that only domesticated animals such as dogs, horses or goats communicate with humans, and suggests many more animals could grasp how to convey meaning to humans, the paper asserts. "It's more likely to be a learned behaviour when the environment is right," researchers say.

Kangaroos can learn to communicate with humans, study says

For years, we have all thought that human beings have evolved to their maximum. But researchers have now revealed that human babies are now being born with slightly different features.

In what is being termed as 'microevolution', scientists have found that babies are now being born with a slightly smaller jaw and&nbsp;extra bones in their legs and feet.

The babies are also being born without wisdom teeth now, but they seem to have an extra artery in their arms.

<a href="https://www.wionews.com/science/researchers-urge-scientists-to-find-more-about-bat-viruses-334042">Also read|&nbsp;Researchers urge scientists to find more about bat viruses</a>

The study was published in a&nbsp;study that was published in the Journal of Anatomy. The researchers of this study have claimed that human are evolving at a rate faster than any other creature or humans in the past have evolved at.

The change in wisdom teeth is because over time the human mouths have gotten smaller, which has resulted in less room for teeth in our mouths now.

Dr Teghan Lucas from Flinders University, Adelaide explained that due to our increased ability to chew food and also natural selection, fewer babies have wisdom teeth now.&nbsp;

<a href="https://www.wionews.com/science/genes-from-extinct-human-cousins-increase-risk-for-severe-covid-19-study-331670">Also read|&nbsp;Genes from extinct human cousins increase risk for severe COVID-19: Study</a>

"A lot of people thought humans have stopped evolving. But our study shows we are still evolving - faster than at any point in the past 250 years," she added.

As for the artery, the&nbsp;median artery forms when a baby is in its mother's womb, but used to disappear after the baby was born. However, now,&nbsp;one in three people have their median arteries throughout their lives. ALthough, the researchers have assured that this poses no danger to the human lives.

Calling it 'micro evolution',&nbsp;Author Professor Maciej Henneberg explained,&nbsp;"The median artery is a perfect example of how we are still evolving because people born more recently have a higher prevalence of this artery when compared to humans from previous generations."

For years, we have all thought that human beings have evolved to their maximum. But researchers have now revealed that human babies are now being born with slightly different features.

For years, we have all thought that human beings have evolved to their maximum. But researchers have now revealed that human babies are now being born with slightly different features. In what is being termed as 'microevolution', scientists have found that babies are now being born with a slightly smaller jaw and extra bones in their legs and feet. The babies are also being born without wisdom teeth now, but they seem to have an extra artery in their arms. Also read| Researchers urge scientists to find more about bat viruses The study was published in a study that was published in the Journal of Anatomy. The researchers of this study have claimed that human are evolving at a rate faster than any other creature or humans in the past have evolved at. The change in wisdom teeth is because over time the human mouths have gotten smaller, which has resulted in less room for teeth in our mouths now. Dr Teghan Lucas from Flinders University, Adelaide explained that due to our increased ability to chew food and also natural selection, fewer babies have wisdom teeth now. Also read| Genes from extinct human cousins increase risk for severe COVID-19: Study "A lot of people thought humans have stopped evolving. But our study shows we are still evolving - faster than at any point in the past 250 years," she added. As for the artery, the median artery forms when a baby is in its mother's womb, but used to disappear after the baby was born. However, now, one in three people have their median arteries throughout their lives. ALthough, the researchers have assured that this poses no danger to the human lives. Calling it 'micro evolution', Author Professor Maciej Henneberg explained, "The median artery is a perfect example of how we are still evolving because people born more recently have a higher prevalence of this artery when compared to humans from previous generations."

Human 'microevolution' forming more arteries, less wisdom teeth in babies

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