List of All Articles with Tag 'science'

On a remote peninsular of Scotland, there’s an experiment underway to put a dollar value on nature restoration

Astronauts have never truly been alone. In 1988, on board the Russian space station Mir, the crew noticed something had blanketed one of their windows – from the outside. Whatever it was had even begun to infiltrate its way into the station, slowly destroying the window's titanium-quartz surface. The blanket was eventually revealed to be fungi that had managed to hitch a ride into space by clinging onto the astronauts themselves, Space.com reports. Amazingly, the fungi had managed to adapt to the space environment, surviving and thriving on windows, control panels, and air conditioners. The on board the space station even had their food and water contaminated. Although this was the first instance of a hijacker damaging the space station, it wasn't the last. Many space-borne fungi remain dormant during launch, until "activating" and reproducing to form thick, living mats on various regions in the space station. The fungi can threaten the health of those on board as well as damage electronics and plumbing. Since the 1988 incident, there have been numerous attempts to establish robust cleaning routines for scrubbing the fungi off walls and equipment, in an attempt to prevent the organisms from causing serious issues. Despite the concern surrounding the risks, scientists are trying to take advantage of the fungi's abilities. One team associated with the European Space Agency (ESA) recently conducted hypergravity experiments on fungi to better understand how these organisms survive effortlessly in the harsh environment of space. If these mechanisms are understood, fungi may be able to be used to build off-world settlements and be incorporated into off-world medications. In 2016, researchers at NASA's Jet Propulsion Laboratory in California launched fungi into space for the first time on board the International Space Station. The team studied how the ISS environment caused the species to create certain molecules it doesn't produce on Earth. "We are never going to be able to get rid of fungi entirely as we venture into space, so we need to understand them," André Antunes, a researcher who is part of the recent ESA study, said in a statement published on Monday. In addition, they offer positive opportunities as well as risks. Down on Earth fungi are employed to make food - such as yeast for fermentation - as well as medicines, chemical enzymes for industry as well as metal nanoparticles used in numerous fields. Sign up to our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

Ancient clay tablets unearthed from ancient ruins in Turkey by archaeologists have revealed a language lost to the passages of time. The new language was discovered in the ancient capital of the Hittite Empire at Hattusa (known as Boğazköy-Hattusha). The well-preserved tablets are among many incredible artworks found at the site - a UNESCO World Heritage Site. Over the past four decades, researchers have dusted off nearly 30,000 unique tablets - with most written in Hittite. New research, however, shows that some of the tablet haul shows that they are written in a language previously unknown to modern man. Of course, the meaning and words of this language have not been deciphered, but it appears from early inspection to branch off from languages used within the Hittite Empire - and is being referred to as Kalašma. archaeologist Interestingly though, researchers from the Istanbul Department of the German Archaeological Institute have noted that the new language is found within a recitation in a 'cultic ritual text'. While that's usually the basis of a middling horror movie, we're certain that there's nothing to worry about - it stems from an ancient Hittite practice. Professor Daniel Schwemer explains that the discovery wasn't unexpected. "The Hittites were uniquely interested in recording rituals in foreign languages," he said. These ritual texts provide insight into little-known languages, and thanks to this discovery, one more has been added to the list. Sign up for our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

A recent finding in South Africa has rediscovered a human population that was thought to have been lost. When some languages from the Namibia Desert died out, anthropologists feared that the populations that spoke them had gone with it. However, researchers have discovered that the genetic identity of these once-thought lost populations may have been maintained, even without their native tongue. Southern Africa holds some of the greatest human genetic diversity on Earth, and it is a common pattern that this diversity suggests it is where a species or family originated. Even without fossil records, anthropologists would know humans evolved in Africa, simply by looking at how much greater the biological diversity is there. It is among the inhabitants of the Kalahari and Namibia Deserts of south-eastern Africa where this diversity can be seen most dramatically. "We were able to locate groups which were once thought to have disappeared more than 50 years ago," Dr Jorge Rocha of the University of Porto said in a statement. One of these groups is the Kwepe, who used to speak Kwadi. The disappearance of the language was thought to mark the end of their serration from neighbouring populations. Dr Ann-Maria Fehn of the Centro de Investigação em Biodiversidade e Recursos Genéticos said: "Kwadi was a click language that shared a common ancestor with the Khoe languages spoken by foragers and herders across Southern Africa." The team managed to find the descendants of those who spoke Kwadi, and discovered that they had retained their genetic distinctiveness that traces back to a time before Bantu-speaking farmers moved into the area. “A lot of our efforts were placed in understanding how much of this local variation and global eccentricity was caused by genetic drift – a random process that disproportionately affects small populations and by admixtures from vanished populations,” said Dr Sandra Oliverira of the University of Bern. "Previous studies revealed that foragers from the Kalahari desert descend from an ancestral population who was the first to split from all other extant humans,” added Professor Mark Stoneking of the Max Plank Institute for Evolutionary Anthropology. “Our results consistently place the newly identified ancestry within the same ancestral lineage but suggest that the Namib-related ancestry diverged from all other southern African ancestries, followed by a split of northern and southern Kalahari ancestries." The research allowed the team to reconstruct the migrations of the region's populations. With the Khoe-Kwadi speakers dispersed across the area around 2,000 years ago, possibly from what is now Tanzania. The populations that once spoke Kwadi, before adopting Bantu languages in recent decades, are the missing piece in the history of humanity as anthropologists identified in this study. The study can be read in Science Advances. Sign up to our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

Blue light emitted from the screens of phones, tablets and televisions could induce puberty early, a study has found. In the modern day, children are raised with devices all around them, with many having a phone or tablet to keep them entertained from a young age. But, researchers in Turkey have discovered that it exposure to the blue light such devices give off could speed up the onset of puberty. Teams from the Gazi University and Bilkent City Hospital in Ankara revealed how they saw the effect in male rats, which could suggest a link between device screens and early childhood development. Their findings were presented at the 61st Annual European Society for Paediatric Endocrinology Meeting in The Hague and published in the Frontiers in Endocrinology journal. The study emulates the same findings that were observed in female rats, where early puberty was seen. Lead researcher Dr. Aylin Kılınç Uğurlu, of Bikent City Hospital, said: “For the first time, we found a direct relationship between blue light exposure and early puberty in male rats.” They continued: “Our findings align with our previous work on female rats, which also showed similar effects, thereby providing a more comprehensive view of how blue light may influence puberty in both male and female rats.” As part of the study, 18 male rats, all 21 days old, were split into three groups. Two of the groups were assigned either six or 12 hours of blue light exposure per day. The last group was a control and was not exposed to any blue light from screens. Results showed that the rats with exposure to blue light experienced signs of puberty “significantly earlier” compared with the control group. Uğurlu noted in a news report: “I want to emphasise that this is a rat study and direct results cannot be interpreted for humans. “However, we provide an experimental foundation to further investigate the health consequences of ever-increasing screen time in modern society.” Researchers hope to continue their study on the effects of blue light on rats to “understand its long-term effects on reproductive organ damage and fertility”. Uğurlu continued: “Ultimately, this research could lead to preventative measures and contribute to the ongoing discourse on how modern lifestyles affect physiological development and long-term health.” Sign up to our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

India’s Chandrayaan-3 lander only touched down on the Moon a month ago, but already it's made some major contributions to science. The spacecraft arrived on the satellite's unexplored south pole on 23 August, securing India's place as the first country to achieve this ambitious feat. Its rover, named Pragyan (or "wisdom" in Sanskrit) then embarked on an exploration of the rocky terrain, equipped with two instruments for conducting chemical experiments. And now, India's space agency, the ISRO, has published the ground-breaking data collected by the bold robot. Pragyan's findings offered a new, detailed insight into what makes up the lunar soil. And whilst scientists were unsurprised by the presence of iron, titanium, aluminium and calcium in the rocks, they were stunned to note a much higher concentration of sulphur than expected. The discovery is significant for a number of reasons. Most significantly, perhaps, because the sulphur could be used to help create a human base on the Moon. As Jeffrey Gillis-Davis, a planetary scientist, pointed out in a piece for Science Alert: "Astronauts and robots could travel from the south pole base to collect, process, store and use naturally occurring materials like sulfur on the Moon – a concept called in-situ resource utilization. "In-situ resource utilization means fewer trips back to Earth to get supplies and more time and energy spent exploring. Using sulfur as a resource, astronauts could build solar cells and batteries that use sulfur, mix up sulfur-based fertilizer and make sulfur-based concrete for construction." Gillis-Davis went on to explain that sulfur-based concrete has a number of advantages over the more common variety used in building, pointing out that it "hardens and becomes strong within hours rather than weeks, and it's more resistant to wear". "It also doesn't require water in the mixture, so astronauts could save their valuable water for drinking, crafting breathable oxygen and making rocket fuel," he added. The presence of sulphur near the Moon's south pole also suggests that highland soils at the lunar poles could have very different compositions to highland soils at the lunar equatorial regions. This would have key implications for our understanding of how the Moon works as a geological system, given that sulfur mainly comes from volcanic activity. Still, there's plenty of work to be done. And while this is all just one small step in Chandrayaan-3's mission, it could mean a great leap in how we view our dear celestial companion. Sign up for our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

Ancient clay tablets unearthed from ancient ruins in Turkey by archaeologists have revealed a language lost to the passages of time. The new language was discovered in the ancient capital of the Hittite Empire at Hattusa (known as Boğazköy-Hattusha). The well-preserved tablets are among many incredible artworks found at the site - a UNESCO World Heritage Site. Over the past four decades, researchers have dusted off nearly 30,000 unique tablets - with most written in Hittite. New research, however, shows that some of the tablet haul shows that they are written in a language previously unknown to modern man. Of course, the meaning and words of this language have not been deciphered, but it appears from early inspection to branch off from languages used within the Hittite Empire - and is being referred to as Kalašma. archaeologist Interestingly though, researchers from the Istanbul Department of the German Archaeological Institute have noted that the new language is found within a recitation in a 'cultic ritual text'. While that's usually the basis of a middling horror movie, we're certain that there's nothing to worry about - it stems from an ancient Hittite practice. Professor Daniel Schwemer explains that the discovery wasn't unexpected. "The Hittites were uniquely interested in recording rituals in foreign languages," he said. These ritual texts provide insight into little-known languages, and thanks to this discovery, one more has been added to the list. Sign up for our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

A natural phenomenon consisting of polka-dot-style formations has been cropping up around the world, and scientists are baffled as to why. The circular-shaped patches of ground have been seen in deserts in Australia and Namibia but now experts believe they are more widespread than originally thought. Known as “fairy circles”, there are now 263 known sites across the globe where they can be found, according to new research published in the journal Proceedings of the National Academy of Sciences (PNAS). They have been documented in 15 countries, across three continents, including the Sahel region of Africa, Madagascar, and in Middle-West Asia. And yet, despite the spread of these anomalies, scientists are still none the wiser about how they actually form. A team led by environmental scientist Emilio Guirado, of the University of Alicante in Spain, explained in their paper on the "intriguing" phenomenon: “We conducted a global and systematic assessment of fairy circle-like vegetation patterns and discovered hundreds of [fairy-circle]-like locations on three continents. “Our study provides insights into the ecology and biogeography of these fascinating vegetation patterns and the first atlas of their global distribution.” The mysterious circles appear in desert regions and can be as wide as 12 metres (39 feet) in diameter. They are almost always spaced out and rarely connect or overlap with one another. Several theories have been put forward as to what causes them, including, tiny insects, termites, and plant toxins. But, none have been accompanied by any significant evidence and some have been debunked completely. One significant factor limiting their study is they are often found in places that are difficult to access and are inhospitable. Locating the 263 different sites of “fairy circles” involved analysing high-resolution satellite imagery. Guirado and his team wrote in their paper: “[The sites] include those already identified in Namibia and Western Australia, as well as areas never described before, including the Sahel, Western Sahara, Horn of Africa, Madagascar, Southwest Asia, or Central and Southwest Australia. “By doing so, our study provides a global atlas of areas showing FC-like vegetation patterns and expands the known existence of this vegetation type to new countries and continents.” The team hopes that locating new sites will enable them to find common traits that may point towards their cause. Sign up to our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

At its largest expanse this year, sea ice covered less than 17 million square kilometers (6.6 million square

Ancient clay tablets unearthed from ancient ruins in Turkey by archaeologists have revealed a language lost to the passages of time. The new language was discovered in the ancient capital of the Hittite Empire at Hattusa (known as Boğazköy-Hattusha). The well-preserved tablets are among many incredible artworks found at the site - a UNESCO World Heritage Site. Over the past four decades, researchers have dusted off nearly 30,000 unique tablets - with most written in Hittite. New research, however, shows that some of the tablet haul shows that they are written in a language previously unknown to modern man. Of course, the meaning and words of this language have not been deciphered, but it appears from early inspection to branch off from languages used within the Hittite Empire - and is being referred to as Kalašma. Interestingly though, researchers from the Istanbul Department of the German Archaeological Institute have noted that the new language is found within a recitation in a 'cultic ritual text'. While that's usually the basis of a middling horror movie, we're certain that there's nothing to worry about - it stems from an ancient Hittite practice. Professor Daniel Schwemer explains that the discovery wasn't unexpected. "The Hittites were uniquely interested in recording rituals in foreign languages," he said. These ritual texts provide insight into little-known languages, and thanks to this discovery, one more has been added to the list. Sign up for our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

India’s Chandrayaan-3 lander only touched down on the Moon a month ago, but already it's made some major contributions to science. The spacecraft arrived on the satellite's unexplored south pole on 23 August, securing India's place as the first country to achieve this ambitious feat. Its rover, named Pragyan (or "wisdom" in Sanskrit) then embarked on an exploration of the rocky terrain, equipped with two instruments for conducting chemical experiments. And now, India's space agency, the ISRO, has published the ground-breaking data collected by the bold robot. Pragyan's findings offered a new, detailed insight into what makes up the lunar soil. And whilst scientists were unsurprised by the presence of iron, titanium, aluminium and calcium in the rocks, they were stunned to note a much higher concentration of sulphur than expected. The discovery is significant for a number of reasons. Most significantly, perhaps, because the sulphur could be used to help create a human base on the Moon. As Jeffrey Gillis-Davis, a planetary scientist, pointed out in a piece for Science Alert: "Astronauts and robots could travel from the south pole base to collect, process, store and use naturally occurring materials like sulfur on the Moon – a concept called in-situ resource utilization. "In-situ resource utilization means fewer trips back to Earth to get supplies and more time and energy spent exploring. Using sulfur as a resource, astronauts could build solar cells and batteries that use sulfur, mix up sulfur-based fertilizer and make sulfur-based concrete for construction." Gillis-Davis went on to explain that sulfur-based concrete has a number of advantages over the more common variety used in building, pointing out that it "hardens and becomes strong within hours rather than weeks, and it's more resistant to wear". "It also doesn't require water in the mixture, so astronauts could save their valuable water for drinking, crafting breathable oxygen and making rocket fuel," he added. The presence of sulphur near the Moon's south pole also suggests that highland soils at the lunar poles could have very different compositions to highland soils at the lunar equatorial regions. This would have key implications for our understanding of how the Moon works as a geological system, given that sulfur mainly comes from volcanic activity. Still, there's plenty of work to be done. And while this is all just one small step in Chandrayaan-3's mission, it could mean a great leap in how we view our dear celestial companion. Sign up for our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

Scientists have found that one of the key pillars of theory around how life works – that it depends on carbon – may not be the case on other planets. Here on Earth, life depends on organic compounds which are composed of carbon, and often involve other elements such as sulphur, oxygen, hydrogen, nitrogen and phosphorus. With organic compounds, life is partly sustained by chemical interactions called autocatalysis, which are self-sustaining. That means they produce molecules which then enable the reaction to happen again, and do not need any outside influence to keep going on. In the new study, scientists looked for autocatalysis in non-organic compounds. The theory is that if autocatalysis helps drive a process called abiogenesis – the origin process for life – then this origin process could also come from non-organic matter. Betül Kaçar, an astrobiologist, bacteriologist and evolutionary biologist at the University of Wisconsin-Madison, told news outlet Space.com: “It's important to explore these possibilities so that we have an idea of what all forms of life can look like, not just Earth life.” "One of the major reasons that origin-of-life researchers care about autocatalysis is because reproduction — a key feature of life — is an example of autocatalysis. “Life catalyses the formation of more life. One cell produces two cells, which can become four and so on. “As the number of cells multiply, the number and diversity of possible interactions multiplies accordingly.” The scientists searched in a huge trove of existing scientific documents for examples of autocatalysis, and found 270 different cycles of the reactions. Most of the 270 examples did not feature organic compounds, but rather elements which are rare in life forms such as mercury, or the radioactive metal thorium. “It was thought that these sorts of reactions are very rare,” Kaçar said in a statement. “We are showing that it's actually far from rare. You just need to look in the right place.” Now, it means scientists can test these cycles to get a better understanding of how autocatalysis can work. “The cycles presented here are an array of basic recipes that can be mixed and matched in ways that haven't been tried before on our planet,” said study author Zhen Peng, also an evolutionary biologist at the University of Wisconsin-Madison. “They might lead to the discovery of completely new examples of complex chemistry that work in conditions where carbon- or even silicon-based cycles are too either combusted or frozen out.” The scientists published their findings in the Journal of the American Chemical Society. Sign up to our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.