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NASA's Perseverance rover has recorded the first audio clips captured on the surface of Mars, beaming back to Earth guttural sounds of wind gusting on the red planet.

The first-of-its-kind audio was released Monday, along with extraordinary new video footage of the rover as it descended and landed last Thursday. The images are among the most sophisticated yet taken of Mars, and offer never-before-seen views of the rover approaching its landing site.

Thomas Zurbuchen, associate administrator for NASA’s Science Mission Directorate, said the new images and audio are "the closest you can get to landing on Mars without putting on a pressure suit."

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The price of bitcoin has crashed spectacularly following weeks of steady gains.

More than $10,000 was wiped from the cryptocurrency’s value in the space of just a few hours on Monday, taking its value below $50,000.

The price correction came after bitcoin hit a new all-time high above $58,000 on Sunday.

Bitcoin’s price fell to below $49,000 on Monday, though its remarkable gains meant it was still trading higher than it was one week ago.

Other major cryptocurrencies also experienced heavy losses, including Ethereum (ether), bitcoin cash, cardano and dogecoin.

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Biologists say the inadvertent discovery of sea life on a boulder underneath an Antarctic ice shelf challenges our understanding of how organisms can live in environments far from sunlight.

The team drilled through the 900-metre-thick Filchner-Ronne Ice Shelf and dropped a camera down the hole in search of mud on the seabed. To their surprise, the camera revealed a boulder ringed by animals. Video footage appear to show 16 sponges, accompanied by 22 unidentified animals which could include barnacles. It is the first time such immobile life has been found beneath an Antarctic ice sheet.

“There’s all sorts of reasons they shouldn’t be there,” says Huw Griffiths at the British Antarctic Survey, who analysed the footage. He thinks the animals, which are likely filter feeders, survive on nutrients carried in the -2°C water. The conundrum is they are so far from obvious nutrient sources, given that the boulder is located 260 kilometres from the open water at the front of the Filchner-Ronne Ice Shelf where photosynthetic organisms can survive.

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Our thoughts are private – or at least they were. New breakthroughs in neuroscience and artificial intelligence are changing that assumption, while at the same time inviting new questions around ethics, privacy, and the horizons of brain/computer interaction.

Research published last week from Queen Mary University in London describes an application of a deep neural network that can determine a person’s emotional state by analyzing wireless signals that are used like radar. In this research, participants in the study watched a video while radio signals were sent towards them and measured when they bounced back. Analysis of body movements revealed “hidden” information about an individual’s heart and breathing rates. From these findings, the algorithm can determine one of four basic emotion types: anger, sadness, joy, and pleasure. The researchers proposed this work could help with the management of health and wellbeing and be used to perform tasks like detecting depressive states.

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A new satellite image has captured the stunning white peaks of two volcanoes on the Big Island in Hawaii, which have experienced their second-most extensive snow coverage since current records began.

The high-resolution image — snapped on Feb. 6 by the Operational Land Imager (OLI) onboard the Landsat-8 satellite — shows the striking contrast between the snow-covered peaks of Mauna Kea and Mauna Loa and the surrounding volcanic rock.

The OLI, is a joint venture between NASA and the U.S. Geological Survey, and the new image was recently released by NASA's Earth Observatory.

Snow and Hawaii may seem like an oxymoron, but the frozen precipitation falls in Hawaii quite a lot. The volcanic peaks of the dormant Mauna Kea and active Mauna Loa — both over 13,600 feet (4,200 meters) above sea leve, with Mauna Kea being taller by just 125 feet (38 m) — receive at least a light dusting every year, according to NASA’s Earth Observatory.

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Pigs have a "remarkable” ability to learn how to play video games — an ability that's nothing to be snorted at. The pigs are unlikely to be taking home an E-sports trophy anytime soon, but their aptitude for learning this skill has highlighted their surprisingly high level of intelligence and cognitive flexibility.

Their exploits were recently the subject of a study in the journal Frontiers in Psychology. The research saw two Yorkshire pigs, named Hamlet and Omelette, and two Panepinto micro pigs, Ebony and Ivory, being taught how to play a simple video game. The pigs were trained to move a joystick with their snouts in front of a computer screen. If they successfully moved the pointing using the joystick toward one of the targets on the screen, they were rewarded with a snack. Even once the pigs stopped receiving the reward, they were able to complete tasks using only verbal and touch cues.

The researchers, who have previously explored the depths of chimpanzee cognition, described their ability to pick up this skill as "remarkable."

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The nearest solar system to our own may actually host two potentially life-supporting planets, a new study reports.

In 2016, scientists discovered a roughly Earth-size world circling Proxima Centauri, part of the three-star Alpha Centauri system, which lies about 4.37 light-years from Earth. The planet, known as Proxima b, orbits in the "habitable zone," the range of distances from a star at which liquid water could exist on a world's surface. (A second planet, Proxima c, was later discovered circling the star as well, but it orbits farther away, beyond the habitable zone's outer limits.)

There's considerable debate about the true habitability of Proxima b, however, given that its parent star is a red dwarf. These stars, the most common in the Milky Way, are small and dim, so their habitable zones lie very close in — so close, in fact, that planets residing there tend to be tidally locked, always showing the same face to their host stars, just as the moon always shows Earth its near side. In addition, red dwarfs are prolific flarers, especially when they're young, so it's unclear if their habitable-zone worlds can hold onto their atmospheres for long.

The other two stars in the Alpha Centauri trio, however, are sunlike — a pair called Alpha Centauri A and B, which together make up a binary orbiting the same center of mass. And Alpha Centauri A may have its own habitable-zone planet, according to the new research, which was published online today (Feb. 10) in the journal Nature Communications.

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A new type of quantum holography which uses entangled photons to overcome the limitations of conventional holographic approaches could lead to improved medical imaging and speed the advance of quantum information science.

A team of physicists from the University of Glasgow are the first in the world to find a way to use quantum-entangled photons to encode information in a hologram. The process behind their breakthrough is outlined in a paper published today in the journal Nature Physics.

Holography is familiar to many from its use as security images printed on credit cards and passports, but it has many other practical applications, including data storage, medical imaging and defence.

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Today in an SEC filing, Tesla disclosed that it has acquired $1.5 billion in bitcoin, the popular cryptocurrency. Moreover, the company noted that it may also accept bitcoin in the future as a form of payment for its cars, though it did allow that there is some regulatory uncertainty around that effort.

As the news broke, the price of bitcoin instantly rose by around 7% to more than $40,000 per coin.

Tesla had previously telegraphed that it had an interest in the cryptocurrency, however to purchase such a large block of the coin is notable.

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It will boil down to two predominant factors that control how a virus behaves in a population: the virus’s biology and the immunity of the host population.

Endemic viruses are those that have constant presence within a geographical area. Such viruses are all around us, though they vary by location. Examples in Europe and North America include the rhinovirus (a cause of the common cold) and influenza virus, while the dengue and chikungunya viruses are endemic in many Asian countries.

Endemic diseases are often milder, but it’s important to note that this isn’t always the case. Flu, for instance, is estimated to cause up to 810,000 hospitalizations and 61,000 deaths annually in the US.

There are currently four endemic coronaviruses that, for most people, just cause a cold. Whether SARS-CoV-2, the virus that causes COVID-19, will join them will be down to two predominant factors that control how a virus behaves in a population: the virus’s biology and the immunity of the host population.

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Drug makers are increasingly turning to monoclonal antibodies to protect the millions of people who can't use vaccines. But questions swirl about their cost and long-term viability.

As the COVID-19 vaccine rollout gathers pace, a population is at risk of being left behind: the millions of people around the globe who lack fully functional immune systems.

While the exact number of the immunocompromised worldwide is unknown, estimates suggest that about 10 million live in the U.S. alone, or around 3 percent of the national population. The number encompasses a diverse range of vulnerabilities, including rare genetic immune deficiencies, chronic illnesses that impair the immune system such as rheumatoid arthritis, and cancer and organ-transplant patients who must take immune-suppressing medications.

For them, vaccines will not be effective, because they are incapable of making their own antibodies to neutralize the SARS-CoV-2 virus. Instead, pharmaceutical companies around the world are racing to develop alternative treatments that bypass the immune system altogether.

The most common option is called monoclonal antibody treatments. These artificially generated antibodies mimic the body’s natural immune response by binding to key sites on the virus’ spike protein, preventing it entering cells and reproducing. Companies including AstraZeneca, Regeneron, and Eli Lilly are currently testing whether monoclonal antibodies can protect immunocompromised people from SARS-CoV-2.

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Archaeologists have unearthed the identity tags of four children murdered by the Nazi Germans at Sobibor death camp in eastern Poland.

Each metal tag is different and was likely given to the children by their parents prior to being separated from them. The parents may have hoped the ID tags would help the children be returned home, according to Yoram Haimi, an archaeologist at the Israel Antiquities Authority, who is part of a team excavating the site.

During the Holocaust, Nazis murdered 6 million Jews, as well as people with disabilities, Roma, Poles and other Slavic people. At Sobibor alone, about 250,000 people — mostly Polish Jews — were killed between May 1942 and October 1943, according to Encyclopedia Britannica.

Sobibor connected to a railway line that brought in Jews from around Europe, and it was near the camp's railway platform that Haimi and his colleagues found the first tag, which belonged to 6-year-old Lea Judith De La Penha who was killed in 1943, according to a statement released by the Israel Antiquities Authority.

Their excavations also uncovered the camp's gas chamber, which was a 3,700-square-foot (350 square meters) building with eight rooms.

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