New Research Reveals Larger Dinosaurs Don’t Have Stronger Bites Than Expected

It’s not that the enormous, carnivorous dinosaurs weren’t the terrifying, bone-crushing predators we envision.

A new study published in the journal Current Biology reveals that a variety of bipedal carnivorous dinosaurs, including Tyrannosaurus Rex, Spinosaurus, and Allosaurus, have evolved to possess the necessary skull strength for powerful bites.

Utilizing 3D scanning and computer modeling, the researchers examined the skull biomechanics of 18 species of theropods.

The findings indicated that while T. Rex and other giants had skulls designed to deliver immense bite forces capable of breaking bones, they actually possessed relatively weak jaws and employed diverse hunting strategies.

“The skull of a T. Rex was specifically optimized for high bite force, which led to significant skull stress,” stated the lead author, Dr. Andrew Lowe from the University of Bristol, UK. “In contrast, stress patterns in other giants like Giganotosaurus suggested they had relatively mild bites. This implies a variety of evolutionary pathways for these carnivorous giants.”

Giganotosaurus is larger than T. rex, reaching 13m (43 feet) long and weighing almost 14 tons – Credit: Getty

Instead of adhering to a singular evolutionary path to apex status, large carnivorous dinosaurs evolved various skull shapes and feeding strategies. Some, like T. Rex, would bite down akin to a crocodile, while others, such as Allosaurus and Spinosaurus, employed thrashing or ripping techniques reminiscent of modern Komodo dragons and big cats.

“The Tyrannosaurus took a different approach,” remarked Steve Brusatte, a professor and paleontologist at the University of Edinburgh who was not part of the study, as reported by BBC Science Focus. “They developed immense bite strength, allowing them to crush the bones of their prey. This created a perilous lifestyle, subjecting the skull’s bones and muscles to significant stress.”

The results also challenge the belief that larger dinosaurs necessarily had stronger bites. Some smaller species may actually exert more stress on their skulls due to increased muscle mass, indicating that size alone isn’t the key factor in bite power.

The variability in bite strength and skull architecture hints at a more specialized ecological landscape in dinosaur ecosystems, offering multiple strategies for dominance in the prehistoric food chain.

“There wasn’t a singular ‘best’ skull design for being a predatory giant. Various designs proved effective,” noted Lowe. “This biomechanical diversity implies that dinosaur ecosystems supported a more extensive range of giant carnivorous ecological niches than we typically consider, with less competition and greater specialization.”

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About our experts

Steve Brusatte is a professor and paleontologist at the University of Edinburgh, and author of the book Mammal Ascending and Governing (20 pounds, Picador), focusing on 325 million years of mammalian evolution and fossils.

Source: www.sciencefocus.com

Ultra-stick Hydrogels: Ten Times Stronger Than Other Water-based Adhesives

Researchers experimented with sticky hydrogels by attaching rubber ducks to rocks by the sea

Hao Guo, Hongguang Liao, Hailong Fan

The rubber ducks that remained attached to coastal rocks for over a year demonstrate the durability of this innovative sticky material. This adhesive has potential applications in deep-sea robotics, repair tasks, and as a surgical adhesive in medical contexts.

“We have created an ultra-sticky hydrogel that performs exceptionally well even when submerged,” says Hailong Fan from Shenzhen University, China. This hydrogel is a soft and flexible material.

Subsequently, at Hokkaido University in Japan, Fan and his team examined 24,000 sticky protein sequences from various organisms to pinpoint the most adhesive amino acid combination, the foundational components of proteins. They leveraged this knowledge to design 180 unique adhesive hydrogels and utilized artificial intelligence models trained on hydrogel properties to optimize formulas for enhanced adhesive agents.

This method allowed the researchers to create a novel class of adaptable, highly sticky hydrogels. According to Fan, this material can adhere to surfaces even after being repeatedly halted and re-stocked or submerged in seawater. Under these circumstances, it surpassed an adhesive strength of 1 megapascal in water, which is about ten times stronger than most soft, sticky materials.

The study indicates that it “illustrates a paradigm shift in the design of high-performance soft materials.” Zhao Qin at Syracuse University in New York commended the team’s efforts in unraveling the adhesive mechanisms of natural proteins and utilizing them in new materials.

The most playful showcase of the hydrogel’s adhesion involved leaving a yellow rubber duck stuck to wave-battered rocks along the shore. In a more pragmatic test, the hydrogel promptly sealed a leaking water pipe. This hints at its potential for repairing underwater structures and improving the durability of flexible electronics and robotics.

This material is also biocompatible, as confirmed by implanting it under the skin of mice, which opens up avenues for biomedical uses such as implants and surgical adhesives.

The impressive adhesiveness of these hydrogels is notable, but it’s important to consider that the material needs to maintain sufficient thickness to function effectively. Researchers hope to test it beyond ideal lab environments, especially in real-world scenarios with rough, contaminated, or moving surfaces.

The team has filed for patents concerning this novel material through Hokkaido University.

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Source: www.newscientist.com

Report finds that Hurricane Helen had increased rainfall and stronger winds as a result of climate change

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  • Climate change has increased Hurricane Helen’s wind speed by 11% and total precipitation by about 10%, according to a new report.
  • Researchers expect Milton to do the same, and say it is likely to get worse because of climate change.
  • The report says the higher sea surface temperatures that contributed to the intensification of both storms are 200 to 500 times more likely to be due to climate change.

As Hurricane Milton hurtles toward Florida’s west coast, a new report estimates how intense Hurricane Helen’s winds and rain could have been due to climate change. Scientists involved in the study said they expected Milton to do the same, and that it would likely get worse because of climate change.

The report, released late Wednesday night, is from the World Weather Attribution Group, a consortium of scientists that analyzes extreme weather events and determines how much climate change has influenced certain events. He is regarded as the leading expert in making decisions.

The findings show that because of climate change, Hurricane Helen’s wind speeds were 11% more intense and its precipitation totals were about 10% higher.

Friederike Otto, a climate scientist at Imperial College London who contributed to the new study, said “we now have a complete study showing a very clear link” between climate change and hurricane strength. “The biggest danger is not making the connection to climate change.”

Like Hurricane Helen, Hurricane Milton is also moving through record-breaking heat. Sea surface temperatures in the Gulf of Mexico are much warmer than usual, even for this time of year. Warmer water acts as fuel for such storms, helping them intensify faster.

Both hurricanes undergo a process known as rapid intensification, where the hurricane’s sustained wind speeds increase by at least 35 miles per hour over a 24-hour period. This trend is becoming more common due to climate change.

The report says the sea surface temperatures that pushed Helen and Milton up were 200 to 500 times warmer due to climate change.

On Monday, Milton experienced a dramatic pressure drop in the center of the hurricane, strengthening to one of the fifth strongest hurricanes ever recorded.

“This storm is definitely explosive,” said Bernadette Woods Plucky, chief meteorologist at the nonprofit research group Climate Central and co-author of the new report.

Using a combination of statistical analysis and detailed climate modeling, the researchers found that climate change and the fossil fuel pollution it causes are about 2.5 times more likely to produce a hurricane as strong as Helen.

This is the third and most extensive preliminary report linking climate change to the heavy rains that killed more than 200 people after Hurricane Helen made landfall in Florida’s Big Bend region on September 26.

Scientists at World Weather Attribution examined rainfall over two days along the coast of Florida, where Helen first hit, and three days of rainfall in mountainous areas in six neighboring states, including North Carolina and Tennessee. Assessed quantity.

They found that coastal rainfall totals are 40% more likely to be this high due to climate change, and inland rainfall totals are 70% more likely to be this high due to climate change. I discovered that there is a sex.

Helen flooded parts of southern Appalachia with more than 6 feet of rain. Floodwaters washed away houses, washed out highways, and cut off access to the town. Much of the recovery work is just beginning.

Damaged buildings in downtown Chimney Rock, North Carolina, after Hurricane Helen passed through on October 2nd.
Alison Joyce/AFP via Getty Images

The World Weather Attribution group is a loose confederation of scientists who rapidly publish extreme findings about whether and how climate change has affected particular events. Twenty-one researchers participated in the new analysis. Although the group uses peer-review methods, its findings are published prior to traditional peer-review when events are new and particularly newsworthy. Previous studies on global weather attribution have withstood further scrutiny by outside scientists and been published in major scientific journals.

Otto said the new results are consistent with two previous analyzes of the effects of climate change on Hurricane Helen, but different researchers defined the parameters of the study in different ways, and there are different He said each report produced different numbers because they focused on geography.

Scientists at World Weather Attribution will run the numbers again for Milton and write a new report.

Source: www.nbcnews.com

‘Apple’s Focus on Games Has Never Been Stronger: What’s in Store for Apple Arcade?’

WWhen Apple introduced its gaming subscription service, Arcade, in September 2019, it garnered significant attention, as is typical for the company. The offering of 100 premium mobile games (without ads) for a monthly fee of £4.99/$4.99 (now £6.99) aimed to replicate the Netflix subscription model in the gaming industry.

Arcade was positioned as an alternative to the predominant free-to-play and ad-supported mobile games market. The presence of popular games like Genshin Impact, Clash of Clans, and Candy Crush had made it challenging for paid premium games to gain traction. However, Arcade changed the game by providing a diverse selection of titles playable on various Apple devices without ads or in-app purchases. Moreover, the games could be enjoyed offline, eliminating interruptions during gameplay.

Five years later, the landscape has evolved significantly with the emergence of new subscription services for TV, movies, and games, competing with Apple Arcade. This raises questions about Arcade’s continued relevance and priority for Apple.

Alex Rofman, a senior director at Arcade with a long history in mobile gaming, reflects on the successes of 2023, highlighting the launch of Hello Kitty Island Adventure and What the Car winning Mobile Game of the Year at the Dice Awards.

“Very silly and original”… What a car trailer.

Apple Arcade has positioned itself as a platform for delivering premium, engaging, and ad-free gaming experiences to a wide audience. The focus on innovative and family-friendly titles like Assemble With Care, Card of Darkness, and Hello Kitty caters to tech-savvy parents seeking safe gaming options for their children.

Bright spot…Neo Cab. Photo courtesy of Chance Agency

Despite the shift towards family-friendly games, Apple remains committed to supporting indie developers and fostering unique and creative ideas within the gaming industry. The success of titles like What the Car and Sneaky Sasquatch exemplifies Apple Arcade’s role as a platform for showcasing innovative indie games.

While facing criticism regarding canceled projects and declining royalty payments, Apple defends its commitment to supporting developers and reinforcing the importance of gaming within its ecosystem. The future of Apple Arcade includes games designed for Vision Pro, Apple’s spatial computing device, offering new gaming experiences and innovation in gameplay.

“Vision Pro opens up a whole new world of possibilities.” Photo: Angela Weiss/AFP/Getty Images

Despite challenges and competition, Apple Arcade continues to play a crucial role in the mobile gaming industry, offering curated gaming experiences for families and indie game enthusiasts. With a focus on innovation and inclusivity, Apple Arcade aims to solidify its position in the gaming sector as it navigates the evolving landscape in the coming years.

Source: www.theguardian.com