The Megalodon differed from a giant great white shark

The real megalodon may have been longer and slimmer than this illustration.

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A new analysis of fossil evidence reveals that the megalodon, an ancient shark often depicted as a super-sized great white, was actually a very different beast. A team of shark scientists concluded that this fearsome predator was longer, thinner and hunted in a different way.

He is well known for his depiction of “. meg movie franchise, Otodus megalodon It became extinct about 3.5 million years ago. It was one of the largest marine predators of all time, but no complete skeleton has ever been found, so we don’t know exactly how big it was.

2022 survey by jack cooper Doctors from Swansea University, UK, et al. IRSNB P 9893, It is housed at the Royal Belgian Institute of Natural Sciences in Brussels. They found it to be a stocky, powerful shark, similar to the great white shark, built to attack at breakneck speeds to attack its prey.carcharodon carcharius) current –?? but at 15.9 meters long, it is about three times longer.

charles underwood Researchers from Birkbeck, University of London, said the study made “tenuous assumptions” about megalodon’s size, mainly based on the fact that it has teeth similar to great white sharks, although it is much larger. ing. He is part of a group of 26 shark experts aiming to set the record straight with new research.

Underwood said Cooper’s team didn’t realize how incomplete the partial skeleton was. The vertebrae lack the typical size of a shark, tapering toward both the tail and the head, indicating that much of the vertebrae are missing, he said.

The researchers of the new study say that the strength of the spinal column suggests a slender body shape than the great white shark, which would make megalodon sharks very unwieldy.

“It almost certainly doesn’t feed like modern great white sharks,” Underwood said. “You wouldn’t just hover over the ocean floor, wait for the whale to move over it, and then hit the whale from below and basically tear it apart. It’s better than an ambush predator. , you’re going to need more straight-line tracking, longer tracking, because you don’t have top speed. You don’t have acceleration.”

Based on other partial fossils, the largest known specimen of Megalodon was estimated to be 20 meters long. Mr. Underwood believes that it was actually 20% longer than him, and that he was 24 meters long.

But Professor Cooper dismissed the new study as too simplistic, favoring a reconstruction of a shorter, stockier megalodon. “The bottom line is, no matter which theory you support about its body shape, it was a very large shark,” he says. “Of course, a complete skeleton would go a long way in helping us learn more. But I also don’t think we should think that this settles all debates about this very charismatic animal.”

However, the chances of finding a complete, well-preserved specimen may be low. eva stewart A professor at Britain’s Southampton University, who was not involved in the study, said he had recovered many megalodon teeth while searching for a new living species, but had seen no sign of a more complete specimen.

“I think the rest of the skeleton is just not well preserved,” she says. “For megalodon, there’s actually no fossil evidence at all.”

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Source: www.newscientist.com

Biden administration allocates $623 million to enhance electric vehicle charging infrastructure, White House reports

President Joe Biden’s administration has announced $623 million in funding to increase electric vehicle charging points in the U.S. amid concerns that the transition to zero-carbon transportation is not keeping pace with goals to tackle the climate crisis.


The money will be distributed as grants to dozens of programs across 22 states, including EV chargers for multifamily housing in New Jersey, fast chargers in Oregon, and hydrogen fuel chargers for cargo trucks in Texas. In total, funds pulled from the bipartisan infrastructure law are expected to add his 7,500 chargers across the United States.

“We’re building the charging network to win the EV race,” said U.S. Secretary of Transportation Pete Buttigieg.

“The electric vehicle revolution is not coming, it is here. I very personally recognize the importance of the fact that America led the world in the automobile revolution. We’re in the middle of a second automotive revolution, and it’s important that America has one again.”

There are about 170,000 electric vehicle chargers in the U.S., a significant increase from a network that was nearly invisible before Biden took office, and the White House is helping the transition away from gasoline and diesel vehicles. The company has set a goal of selling 500,000 chargers.

Biden’s climate change adviser, Ali Zaidi, said that “America is leading the way globally on electric vehicles” and that the U.S. is on track to “meet and exceed” the administration’s charger goals. He said there was. He added: “This expansion will continue over the coming years and decades until we reach net zero in the transport sector.”

Sales of electric vehicles are growing in the United States, with more than 1 million EVs sold for the first time last year, accounting for 9% of all car sales. But that rate of growth has slowed somewhat, with companies like Ford, General Motors and even Tesla scaling back their EV ambitions in recent months.

U.S. motorists are faced with an ever-expanding selection of EVs, but most are still more expensive than their gasoline equivalents, meaning they are out of reach for many buyers. research has discovered The median household income for EV buyers is $186,000.

Research shows that nearly one-third of potential EV buyers discount their purchase due to lack of charging infrastructure, despite accounting for most of the total vehicle trips in the United States. Masu. 3 miles or less. Even if Biden’s goal of 500,000 chargers is met, this is far fewer than is needed to support a gradual transition away from polluting cars. Estimate It is predicted that more than 28 million chargers will be needed by 2030.

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“In the U.S., EV penetration is growing at almost twice the rate of charger installations,” said Brent Gruber, executive director of J.D. Power’s electric vehicle business. said last year. “Construction of new charging stations is not keeping up with demand.”

Earlier this week, the Environmental Protection Agency announced nearly $1 billion in grants to replace diesel-powered school buses with electric and low-emission vehicles. EPA will disburse the funds to 280 school districts serving 7 million children nationwide. Charging infrastructure is also an issue in efforts to phase out diesel buses.

Source: www.theguardian.com

Technology companies express concerns over potential “irreparable harm” due to White House-backed sales suspension of Apple Watch | Science and Technology News

Apple expressed concerns about potential “irreparable harm” after the White House backed a ban on imports of certain watches due to a dispute over blood oxygen technology.

The tech giant has submitted an emergency motion to the court, seeking permission to continue selling two popular models, the Series 9 and Ultra 2, until the patent dispute with medical monitoring tech company Masimo is resolved.

Apple has requested the ban to be temporarily lifted until U.S. Customs determines whether a redesigned version of its watch infringes Masimo’s patents, with a decision expected on January 12th.

Masimo has accused Apple of stealing pulse oximetry technology for monitoring blood oxygen levels and incorporating it into their watch, as well as luring some of its employees to switch to Apple.

The US ITC has ordered a ban on the import and sale of models utilizing blood oxygen level reading technology.

Wealth management analyst Dan Ives stated that the halt in watch sales before the holiday season could cost Apple $300-400 million, but the company is still expected to make nearly $120 billion in sales for the quarter, including the holiday period.

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U.S. Trade Representative Katherine Tai upheld the ITC’s decision, but previously purchased Apple Watches with blood oxygen measurement capabilities are not affected by the ban.

Apple contests the ITC’s decision, claiming it is based on factual errors and that Masimo does not sell significant quantities of competing products in the U.S., and would not be harmed by a ban on orders.

Source: news.sky.com

Miracle Needed for White Christmas Wishes, extensive warmth predicted

Are you dreaming of a white Christmas?

If so, that dream may have to wait until 2024. Above-average temperatures are expected across much of the United States from December 21-27.

For the second year in a row, weather conditions across the country for the week ending December 25 are expected to be characterized by widespread shortages of cold air and precipitation, the two elements necessary for snow formation.

However, in some northern and mountainous regions, old snowpack from previous winter storms could help us have a white Christmas. This includes parts of the Rocky Mountains, Cascades, Sierra Mountains, and the northernmost parts of Minnesota, Michigan, and Maine.

Official definition of white Christmas According to the National Weather Service, this refers to the state in which at least 1 inch of snow has accumulated on the ground as of 7 a.m. local time on December 25. Snow can be old or new.

Outside of 2023, the chances of a white Christmas are generally fading away for much of the country, in part due to climate change.

When the National Oceanic and Atmospheric Administration (NOAA) updates its information Probability of white Christmas The study, based on typical weather conditions for thousands of locations across the United States from 1991 to 2020, found that more than half of weather stations had a higher chance of a white Christmas compared to the period before 1991. It was found that it was decreasing.

In the latest releaseNOAA scientists say that while direct comparisons of snowfall amounts on specific days over decades are more tied to daily weather patterns, the probability of a white Christmas is more likely to be due to changes in temperature and precipitation patterns across the country. It reflected trends, which are consistent with the effects of climate change, he said. climate change.

NOAA officials said in a statement that “there were more areas where the likelihood of a white Christmas decreased than where the likelihood of a white Christmas increased,” and these results reflect long-term global warming. It added that this is consistent with the data on

Compared to past decades, the cities where the probability of a white Christmas has decreased most dramatically are Denver (down from 40% to 34%), Minneapolis (down from 80% to 74%), and Chicago (down from 41%). 34%). %), Columbus, Ohio (29% to 23%).

17% of St. Louisans are now more likely to experience a white Christmas than 13% of New Yorkers. And Minneapolis has a better chance at 74% than Buffalo’s 53%. The odds for buffalo are about 50/50, but this is due to fluctuations associated with lake-effect snow events during the early winter months of each year.

There were also some surprising associations between major cities, including Seattle and Washington DC (both 4% chance) and Chicago and Denver (both 34% chance).

With 2023 set to be another harrowing year for those wishing for a white Christmas, it might be time to rethink the lyrics of Christmas classics.

Source: www.nbcnews.com