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Science in action 1tv3u
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The BBC brings you all the week's science news. l6g13
Wow! A mystery signal solved
Episodio en Science in action
In 1977 astronomers recorded a brief and strange radio transmission that looked like it perhaps had even come from an alien civilization. It was named the Wow! signal – because that’s what astronomer Jerry Ehman wrote on the computer printout upon its discovery. But now a team including Abel Méndez of the University of Puerto Rico at Arecibo have come up with an astrophysical hypothesis. An oil tanker which was attacked by Yemen's Houthi rebels in the Red Sea last week is still on fire and may be leaking oil, the US Pentagon says. The talk now is of an agreement to salvage the tanker so a crisis may be avoided, but marine ecologist Carlos Duarte of the King Abdullah University of Science and Technology in Saudi Arabia explains how precious ecosystems are at risk. A meta-analysis of Mediterranean Sea marine species reveals the profound impact of the Messinian Salinity Crisis. Konstantina Agiadi of the University of Vienna tells us how this drastic environmental event resulted in the almost complete evaporation of the Mediterranean Sea roughly 5.5 million years ago and how the resulting changes still influence ecosystems today. Wildfires that swept across Canada last year are still burning in some parts. A new study has confirmed that they put into the atmosphere a vast amount of burned carbon, over half a billion tonnes. Only China, India and the USA emitted more fossil-fuel based carbon in that period. Brendan Byrne of NASA’s Jet Propulsion Laboratory has been using satellite-based observations to track the carbon release. Presenter: Roland Pease Producer: Jonathan Blackwell Production Coordinator: Andrew Rhys Lewis (Image: The Wow! signal represented as "6EQUJ5". Credit: NAAPO)
29:15
Fisheries mismanagement uncovered
Episodio en Science in action
Fishery assessment models – the “backbone” of fisheries management – overestimate the sustainability of the world’s fisheries, according to a study of 230 fisheries worldwide, and populations of many overfished species are in far worse condition than has been reported. We hear from Rainer Froese of GEOMAR - Helmholtz Centre for Ocean Research Kiel. The lunar south pole contains evidence of ancient magma ocean. An analysis of lunar soil in the Moon’s southern high-latitude regions, performed using data from India’s Chandrayaan-3 mission, suggests the presence of remnants of a former ocean of magma. Roland speaks to Santosh Vadawale of India’s Physical Research Laboratory. Stephanie Haustein of the School of Information Studies at Ottawa University discusses the article processing costs for open access of the journal publishing giants in science. The risk of a banana apocalypse could be near, but biologists, including Li-Jun Ma of the University of Massachusetts, might have found a key to their survival. Bananas are facing functional extinction due to the disease Fusarium wilt of banana caused by a fungal pathogen. Discovery of molecular mechanisms used by the banana-destroying microbe brings hope. Presenter: Roland Pease Producer: Jonathan Blackwell Production Coordinator: Andrew Rhys Lewis
29:32
The spread of rabies into Cape fur seals
Episodio en Science in action
In June this year there was the first detected occurrence of rabies in Cape fur seals, discovered after a rabies case in a dog that had been bitten by a seal. Professor Wanda Markotter, Director of the Centre for Viral Zoonoses at University of Pretoria, has been trying to work out how the virus spread into seals and how to keep people (and their pet dogs) safe. The Japan Meteorological Agency issued a seismic “advisory” last week alerting local authorities and the public to a heightened risk of a massive, tsunami-generating earthquake on its southeast coast. Californian emergency manager and sociologist James Goltz, has been working with Japanese experts to evaluate a new dynamic alert system that they introduced after the great 2011 earthquake and tsunami which claimed up to 20,000 lives further north. We hear from Professor Alan Jamieson from the depths of the Tonga Trench. He recently dived into it to see what weird and wonderful creatures he’d find there – but when he reached the bottom, he didn’t see what he expected...! And Steven Goderis of the Free University of Brussels tells us about the Chicxulub impactor - the massive asteroid smacked into Earth off the Mexican coast causing the mass extinction event which wiped out the dinosaurs. He’s part of a paper in the journal Science, looking into the history of the impactor - revealing it was a rare carbonaceous asteroid from beyond Jupiter. Presenter: Roland Pease Producer: Jonathan Blackwell Production Coordinator: Andrew Rhys Lewis (Image: Fighting Seals. Credit: Edwin Remsberg via Getty Images)
30:35
Detecting undetected bird flu cases
Episodio en Science in action
Cases of bird flu in farm workers in the US may be going underreported, due to supposed poor surveillance and lack of testing. We hear from Amy Maxmen of KFF Health News who has been reporting on a study in Texas. We hear from Bradley Moore, Professor of Marine Chemical Biology at University of California, San Diego about marine algae using massive enzymes, dubbed PKZILLAs to biosynthesize fish-killing toxins. BBC Science Correspondent Jonathan Amos gives us the latest on the two American astronauts who blasted off on a test mission to the International Space Station on 5 June, expecting to be back home in a matter of days. But the pair are still there, floating high above the Earth two months later - stuck indefinitely - now facing the sudden prospect of missing the summer entirely and even spending Christmas and New Year in space. And sea lion camera crews are helping researchers explore previously unmapped ocean habitats in southern Australia. Nathan Angelakis of the University of Adelaide tells us about working with the animal camera operators and what we can learn from viewing their movements. Presenter: Roland Pease Producer: Jonathan Blackwell Production co-ordinator: Jana Bennett-Holesworth (Image: Young Farmer and Cows on Dairy Farm. Credit: EyeJoy via Getty Images)
32:24
Examining NASA's new evidence for Martian life
Episodio en Science in action
NASA’s Perseverance Rover has found a fascinating rock on Mars that may indicate it hosted microbial life billions of years ago. Abigail Allwood, exobiologist at NASA’s Jet Propulsion Lab, is on the team scrutinising the new Martian data. And a couple of newly discovered, approximately 500 year old fossils from the ‘Cambrian explosion’ of complexity caught presenter Roland Pease’s eye this week. First Martin Smith from Durham University tells us about a tiny grub that’s ancestor to worms, insects, spiders and crustaceans. Then Ma Xiaoya, who has positions at both Yunnan University in China and Exeter University in the UK, tells us about a spiny slug that was also discovered in a famous fossil site in China. And the first sightings of the landscapes on the underside of the ice shelves that fringe Antarctica. These float atop the ocean around the frozen continent but effectively hold back the glaciers and ice sheets on the vast landmass. Their physical condition therefore is pretty critical in this warming world, Anna Wohlin of Gothenburg University tells us. Presenter: Roland Pease Producer: Jonathan Blackwell Production Co-ordinator: Jana Bennett-Holesworth (Image: NASA’s Perseverance Mars rover taking a selfie on Mars. Credit: NASA/JPL-Caltech/MSSS)
29:46
The human cost of the decline of nature’s carcass cleaners
Episodio en Science in action
The near extinction of vultures in India may be responsible for an additional half a million human deaths between 2000 and 2005. The widespread use of the painkiller diclofenac in herds of cattle, starting in 1994, led to a massive decline in vulture populations in India, as the drug is poisonous to them. We hear from environmental economist Anant Sudarshan of Warwick University. Cooking like a Neanderthal - Mariana Nabais of the Catalan Institute of Human Paleoecology and Social Evolution has been replicating ancient butchering methods to learn how Neanderthals ate birds. A faster test for sepsis – we hear from Sunghoon Kwon of Seoul National University about a new method for identifying the pathogens involved in sepsis cases. The test has the potential to reduce the turnaround times normally associated with developing treatments for infections and may improve patient outcomes. And it seems we may have inherited some conversational habits from chimps – or rather from whatever came before us and chimps 6 million years ago. Cat Hobaiter of the School of Psychology and Neuroscience of St Andrews University and her colleagues have found that like humans, wild chimps engage in snappy, turn-taking conversations. Presenter: Roland Pease Producer: Jonathan Blackwell Production Coordinator: Jana Bennett-Holesworth (Image: World Wildlife Day - Gyps fulvus feeding on a buffalo carcass at Kaziranga National Park in Assam, India. Credit: Anuwar Hazarika/NurPhoto via Getty Images)
31:50
Destination Asteroid Apophis
Episodio en Science in action
There’s an update from asteroid expert Patrick Michel about the European Space Agency’s Rapid Apophis Mission for Space Safety. The ESA have received permission to begin preparatory work for the planetary defence mission which will rendezvous with the asteroid Apophis, that will be ing by the Earth on Friday, April 13th 2029. And in news from the Moon this week – a massive cave has been discovered on its surface that might be a window into the body’s sub-surface, and even a ready-made lunar base for future astronauts to use. The claim was made in Nature Astronomy by a team of Italian planetary scientists, and two experts in remote sensing who have been re-interpreting radar data from a NASA orbiter - Leonardo Carrer and Lorenzo Bruzzone from University of Trento in Italy. In the magazine Science, there’s a call for a re-doubling of efforts to tackle malaria in Africa as signs grow that a leading treatment, Artemisinin, is becoming less effective. Deus Ishengoma, a malaria expert with the Tanzanian National Institute for Medical Research, is worried, having seen the transformation Artemesinin made in the past. Tiny solar-powered flying robots - an ultra-lightweight, solar-powered micro aerial vehicle capable of sustained flight is described in a paper published in Nature. Peng Jinzhe of the School of Energy and Power Engineering at Beihang University was part of the team behind the 8 millimetre robot. Presenter: Roland Pease Producer: Jonathan Blackwell Production Coordinator: Jana Bennett-Holesworth (Image: ESA’s Ramses mission to asteroid Apophis. Credit: The European Space Agency)
33:53
Hurricane Beryl’s trail of destruction
Episodio en Science in action
The 2024 north Atlantic hurricane season has started with a bang, with Hurricane Beryl traversing the whole ocean, and leaving a trail of destruction across the Caribbean, into Mexico and Texas. Presenter Roland Pease speaks to climate expert Michael Mann of Pennsylvania University about this hurricane season and the role of climate change. And Roland speaks to Amie Eisfeld of the Influenza Research Institute at the University of Wisconsin–Madison, who has been looking at the infection and transmission of bovine H5N1 influenza (bird flu). The virus is shown to be transmitted through the milk of cows with bovine flu to mice and by intranasal exposure to mice and ferrets. The findings are published in Nature this week. Ancient genomics: Neolithic farmers hit hard by the plague. Repeated outbreaks of plague may have contributed to the decline in Neolithic populations in Scandinavia, a Nature paper suggests. The analysis of ancient DNA from more than 100 individuals sheds light on the fate of these farmers around 5000 years ago. Roland speaks to geneticist Frederik Seersholm of the Lundbeck Foundation GeoGenetics Centre in Copenhagen. And a cheap coating that can be painted easily onto the glass of greenhouses converts part of the sunlight spectrum into red light that should boost the rate at which plants grow. Roland s the chemists and crop scientists to see if there really is a difference with tomatoes and strawberries. Presenter: Roland Pease Producer: Jonathan Blackwell Production Coordinator: Jana Bennett-Holesworth (Image: Hurricane Beryl batters northern Jamaica after killing 7 people in southeast Caribbean. Credit: Anadolu/Getty Images)
28:57
Cleaner mining, cleaner batteries
Episodio en Science in action
Science in Action is at the UK's Royal Society Summer Science Exhibition, hunting for dark matter, melting ancient ice, cleaning up disused mines and looking for the batteries of the future. Presenter: Roland Pease Producer: Alex Mansfield Production Coordinator: Jana Bennett-Holesworth (Image: Pile of used batteries ready for recycling. Credit: Mindful Media via Getty Images)
29:43
On the road to halting HIV
Episodio en Science in action
An injectable antiviral "PrEP" therapy that gives 100% protection against HIV infection. Trials among young women in South Africa and Uganda proved so effective, they were wound up early to accelerate its use. Linda-Gail Bekker of the Desmond Tutu HIV Foundation shares her excitement. A new kind of gene therapy that uses the cell's own “epigenetic” mechanisms to silence troublesome portions of our DNA, tested against the prion protein responsible for some brain diseases. Jonathan Weissman led the research at the Whitehead Institute for Biomedical Research in Massachusetts. Accelerated evolution is being tested in Matthew Nitschke’s labs in the Australian Institute for Marine Science to see if it can help protect natural corals against future global warming. The amazing 4.200 km transatlantic flight of some Painted Lady butterflies – and the extraordinary detective work ecologist Gerard Talavera and team needed to prove it. Presenter: Roland Pease Producer: Jonathan Blackwell Production Coordinator: Jana Bennett-Holesworth (Image: HIV Vaccine Efficacy Trial Conducted In Uganda. Credit: Luke Dray / Stringer via Getty Images.)
28:37
China: Scientific Superpower
Episodio en Science in action
How has China reached the top spot of scientific research so quickly? Science editor of The Economist, Ainslie Johnstone, gives us the Cs grand, broad plans whilst Nature’s Asia and Pacific editor, Gemma Conroy, digs into the specifics of China’s future particle collider. Also, Gene Kirtsky, who has been studying cicadas for 50 years, discusses the spectacle of the millions of insects which have been emerging across the USA this summer. And Unexpected Elements' Marnie Chesterton gets close and personal with the stinkiest plant in the world at Kew Garden in London. Presenter: Roland Pease Producer: Ella Hubber Production Coordinator: Jana Bennett-Holesworth (Image: Jiangmen Underground Neutrino Observatory Under Construction. Credit: VCG / Getty Images.)
26:44
US bird flu response warning
Episodio en Science in action
With mice being the latest species to carry the disease, pandemic expert Rick Bright calls for stronger counter measures. “It’s like PTSD from February 2020” he says. The authorities in the USA are responding too slow to the spread of H5N1 bird flu through its dairy farms – even mice are carrying the virus now, and not enough is known of how it is evolving and whether humans are threatened. He talks Roland through the complex political and public health issues. Child sacrifices in the Mayan empire a thousand years ago have been confirmed with DNA evidence from bones recovered in the 1960s from an underground pit. Some victims were twins, possibly indicating a brutal ritualistic re-enactment of an ancient myth involving divine twins. Geneticist Rodrigo Barquera describes the analysis. Mature orchids perform a unique form of offspring-care, feeding tiny seedlings with nutrients via networks of thread-like fungal hyphae in the soil, according to experiments conducted at Sheffield University. Mycologist Katie Field has been delving into this underground sustenance network. Geoscientists at the edge of the Arctic ocean are looking for ancient clues to the stability of the Atlantic circulation that brings critical warmth to Europe and the northern hemisphere. Could past changes help unravel the influence of global warming? Roland talks to Renata Lucchi in the control room of Research Vessel JOIDES Resolution. Presenter: Roland Pease Producer: Alex Mansfield Production Co-ordinator: Jana Bennett-Holesworth (Image: Mouse sitting on grain. Credit: SAEED KHAN/Getty Images)
34:19
A humungous temporary tentacle
Episodio en Science in action
The ‘origami’ superpowers of a single-celled pond hunter, it hunts by launching a neck-like proboscis that can extend more than 30 times its body length. Manu Prakash of Stanford University reveals the amazing mathematical mechanisms of the protist, Lacrymaria olor. Research from Elana Hobkirk at Durham University has found that the process of domestication and selective breeding has limited the ability of domestic dogs to use facial expressions to convey emotions as effectively as their wolf ancestors. Whilst we may be easily manipulated by the ‘puppy eyes’ of our pet dogs, they are no longer able to display the same range of emotions that wolves can, who need strong visual communication to maintain their packs. Who discovered the first black hole? Science writer Marcus Chown tells us about the discovery of Cygnus X-1 discovered by Paul Murdin and Louise Webster in 1971. And 100 years ago this week, Indian physicist Satyendra Nath Bose posted his revolutionary paper to Albert Einstein, which went on to influence quantum mechanics, low-temperature physics, atomic physics, and the physics of the particles that shape the Universe. Physicist Ajoy Ghatak and presenter Roland Pease discuss the story of the man who had the word ‘boson’ coined to memorialise him in the late 1920s. Also in the longer podcast version: It’s a microbe-eat-microbe world out there, with bacteria waging constant war against each other. It’s by dipping into their ever-evolving chemical arsenal that we keep our pharmacies supplied with the antibiotics we use to fight infectious bacteria - and computer biologist Luis Coelho of Queensland University of Technology has turned to genetics and AI to speed up the search for novel compounds. Presenter: Roland Pease Producer: Jonathan Blackwell Production Coordinator: Jana Bennett-Holesworth
38:48
Trusting AI with science
Episodio en Science in action
AI is already being used in every branch of science, and will become more and more a feature of future breakthroughs. But with its power to find subtle patterns in massive data sets comes a concern about how we will know when to trust its outcomes, and how to rely on its predictions. Science in Action talks to Alison Noble who just completed a Royal Society report on trust in scientific AI. With highly pathogenic bird flu infecting around 70 dairy herds across 10 states in the USA, including a herd of alpacas, we get an update from health journalist Helen Branswell of StatNews on the latest science and efforts to get on top of the infection. Also, from the pioneers of the mRNA vaccines that helped turn around the COVID pandemic, an experimental version that could be rolled out rapidly if the bird flu does cross worryingly into people. University of Pennsylvania’s Scott Hensley described how it works, and how promising it looks. Science in Action also hears how Europe’s new EarthCARE satellite, equipped to peer deep inside clouds, will tackle one of the biggest unknowns in the science of global warming. Presenter: Roland Pease Producer: Jonathan Blackwell
31:49
The roots of fentanyl addiction
Episodio en Science in action
Fentanyl is a powerful morphine substitute, but it is also incredibly addictive – millions struggle with weaning themselves off it. And of the 600,000 drug deaths worldwide each year, the World Health Organisation estimates 80% are due to opioids in general, with synthetic opioids like fentanyl being a growing part of the problem. New work with genetically manipulated mice suggests that fentanyl affects two parts of the brain, one associated with the high, but also another that regulates fear. This knowledge could aid in the development of treatments to reduce addiction to the opioid. Early developers: Long before a developing implants into a mother's uterus, in fact as the fertilised egg divides for the first time into a pair of cells, which line becomes the future baby and which will become the 'life ' system of the placenta has been decided. Embryologist Magdalena Zernicka-Goetz explains why this early unfolding of the genetic programme is important, and why it's taken so long to discover it. Getting through pregnancy is only the first step in a person’s life. Surviving childhood, particularly for our old stone age ancestors, was the next challenge. And a new study looking at children’s teeth found at ancient archaeological sites gives clues as to why our ancestors fared better than the neanderthals around them during the last ice age. Supersense: twitching hairs on some caterpillars turn out to be early-warning sensors feeling the electric field of an approaching wasp, giving the potential prey precious moments to hide or escape death. Biophysicist Daniel Robert explains the challenge of seeing the electric world of insect hunters and hunted. Presenter: Roland Pease Producer: Jonathan Blackwell Production co-ordinator: Jana Bennett-Holesworth (Image: Fentanyl. Credit: Isaac Lee via Getty Images.)
31:11
Aurora Bore-WOW-lis
Episodio en Science in action
They were the best northern and southern lights in decades, but why? And what’s next? We hear from astrophysicist Steph Yardley about the solar maximum, geomagnetic storms and atmospheric spectaculars. Also, the impossible heatwave in the Philippines made possible by global warming – the analysis of a continent-spanning climate extreme by the World Weather Attribution collaboration. Getting close up to raging tornadoes in order to fill in the big gaps that remain in the science of their development. And the tale of the lizard’s tail, and how it could lead to safer buildings in the future. (Photo: The aurora borealis, also known as the 'northern lights’, are seen over The Roaches near Leek, Staffordshire, Britain, May 10, 2024. Credit: Carl Recine/Reuters) Presenter: Roland Pease Producer: Jonathan Blackwell
31:15
Changing blood types and whale grammar
Episodio en Science in action
Could future blood transfusions be made safer by mixing in a new bacterial enzyme? Every year 118 million blood donations need to be carefully sorted to ensure the correct blood types go to the right patients. Prof Martin Olsson, of Lund University in Sweden, and colleagues in Denmark have published a study that suggests an enzyme made by bacteria in our gut could edit our blood cells to effectively convert type A, B and AB to type O. This would be a step towards a universal blood type that could be given to any patient. Papua New Guinea’s Naomi Longa is a “Sea Woman of Melanesia”. She works to train local women from the Kimbe Bay region of the Coral Triangle to dive, snorkel, navigate and use AI to monitor the coral reefs there. She is winner of this year’s Whitley Award, and tells us why it is socially and scientifically useful to get locals - specifically females - involved in conservation efforts there. Data scientist and roboticist Prof Daniele Rus of MIT has been using Machine Learning to decipher structure in a vast swath of Sperm Whale song data from Dominica. They have discovered a set of patterns and rules of context that seem to govern the way sperm whales structure their distinctive sets of clicks. The next step? See if we can decode any semantic content… Also, 200 years after Beethoven’s 9th symphony premiered, science says its composer couldn’t hold a beat. A cautionary tale of the hubris of genetic data miners, Laura Wesseldijk describes to Roland how she and her collaborators designed the paradoxical study to point out the limitations of finding any sort of “musical genius” genes with contemporary techniques. Presenter: Roland Pease Producer: Alex Mansfield Production Coordinator: Jana Bennett-Holesworth (Image: Two Sperm Whales, Caribbean Sea, Dominica. Credit: Reinhard Dirscherl via Getty Images)
31:23
Crossover clues
Episodio en Science in action
As bird flu is found in US farm cats fed on raw cow’s milk, chimpanzees are observed eating infected bat dung instead of vegetables. There is a constant threat of infections crossing from species to us and also from species to other species, particularly because of what we do. That is, after all, what happened to start the pandemic. We hear about the ongoing struggles of the Chinese virologist who broke his instructions in China in order to share the first COVID genetic data. And a strange tale of how tobacco growing might provide bat viruses a path into other species. Presenter: Roland Pease Producer: Alex Mansfield Production Coordinator: Jana Bennett-Holesworth (Image Credit: Jason Alden/Bloomberg via Getty Images)
27:46
An armada for asteroid Apophis?
Episodio en Science in action
Friday, April 13th 2029 – mark it in your calendar. That’s the day an asteroid the size of an aircraft carrier will fly past Earth, closer than some satellites. Don’t worry – it will miss, but it’ll will so close to Earth that it will be visible to the naked eye of 2 billion people, particularly in North Africa and Western Europe. Roland Pease this week attended the Apophis T-5 Years conference at the European Space Research and Technology Centre (ESTEC) in the Netherlands, meeting astronomers scrambling to get missions up to the object to learn what kind of threats such asteroids might pose to us in the future and to discuss the science of planetary defence. NASA’s OSIRIS-APEX, a follow-on to OSIRIS-REx, will study the physical changes due to the gravitational forces from the Earth as it closely es us by. But will there be an armada of spacecraft sent to monitor Apophis? The European Space Agency hope to gather for their own mission, RAMSES. Presenter: Roland Pease Producer: Jonathan Blackwell Image Credit: JPL/Caltech
26:51
Unexpected black hole in our galaxy
Episodio en Science in action
A black hole just discovered in our Milky Way galaxy, weighing 33 times the mass of the Sun, and dating back to near the time of the Big Bang, gives new clues to the origins of this dark astronomical mysteries. And dancing with a Sun-like star in our galactic neighbourhood, it offers a great opportunity for astronomers to take a detailed look in coming years, as astronomer Professor Gerry Gilmore of Cambridge University tells the programme. Presenter Roland Pease has headed to the lab of Professor Ludovic Orlando in Toulouse, where they are extracting ancient DNA from horses as part of a project called “Horsepower” - to reveal how our prehistoric ancestors tamed and domesticated these powerful animals (long after cattle and sheep) and in the process helped shape the extraordinary history of the first states of China and Mongolia. And a deep look into the mechanisms of addiction – showing how drugs of abuse, such as cocaine, hijack the neuronal pathways that had evolved to drive our innate needs such as eating and drinking. Roland hears from psychiatrist Eric J. Nestler of the Friedman Brain Institute at Icahn School of Medicine at Mount Sinai in New York, how this could one day improve addiction treatments. Presenter: Roland Pease Producer: Jonathan Blackwell Production Coordinator: Jana Bennett-Holesworth (Image: An artist's impression shows the orbits of the most massive stellar black hole in our galaxy, dubbed Gaia BH3, and a companion star. Credit: European Southern Observatory via Reuters)
31:12
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