Did the Chicxulub meteor that did for the dinosaurs have a smaller companion? Dr Uisdean Nicholson and Professor Sean Gulick talk to Vic Gill about the newly discovered Nadir Crater. Located on the other side of the Atlantic, it’s raising questions about whether Earth was bombarded with not one, but two, meteors on the day the dinosaurs were wiped out. Back in January, the Hunga-Tonga Hunga-Ha’apai volcano in Tonga erupted explosively, triggering a massive tsunami across the Pacific. Now, engineers are remotely scanning the volcano from 16,000km away in Essex. Ashley Skett from SEA-KIT International and Dr Mike Williams from NIWA describe how a robotic vessel is mapping the Tongan seabed. And we get to the bottom of the mystery surrounding a 500-million-year-old fossil…quite literally. The microscopic, fossilised beast, which has no anus, was previously thought to be our earliest known ancestor. Emily Carlisle from the University of Bristol explains how the theory was debunked. Presented by Victoria Gill
Reporting by Emily Bird
Produced by Alex Mansfield

A Possible Sequel to the Dinosaur Armageddon

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Earlier this week, some of the world's leading astrophysicists came together at The Royal Society to question the very nature of our Universe. Does the Lambda Cold Dark Matter model, which explains the evolution of the cosmos and the Big Bang, need a rethink? Dr Chris North, an astrophysicist from the University of Cardiff, joins us in the studio to explain what this model says, and why it might need to be changed.  The last few weeks seem to have been a non-stop cycle of depressing climate stories, with floods in Pakistan, mass coral bleaching and last month being the hottest March ever recorded. It's perhaps no surprise that many people are anxious about the news. Vic Gill is joined by Prof Lorraine Whitmarsh, an environmental psychologist at the University of Bath, and Tom Rivett Carnac, an author, political strategist and co-host of the podcast Outrage + Optimism. Together they discuss climate anxiety, and how to stay engaged with the news without feeling overwhelmed. And with all this wet weather, how are our precious insects faring? It turns out, bumblebees might have a trick up their fuzzy sleeves when the ground gets flooded - at least according to a new experiment led by Sabrina Rondeau from the University of Ottawa. We also get bumblebee expert Dave Goulson on the line to tell us more about these charismatic insects.  Presenter: Victoria Gill
Producers: Alice Lipscombe-Southwell, Ella Hubber and Hannah Robins 
Editor: Martin Smith
Production Co-ordinator: Jana Bennett-Holesworth

Do we need a new model of cosmology?

A strain of highly pathogenic bird flu, H5N1, has been spreading unchecked through wild bird, and some mammal, populations for the past few years. Last week, news of a large number of dairy cows in the USA being infected with bird flu has alarmed the public and virologists alike. One farm worker has also picked up the virus and although they are not seriously ill, the jump between cattle and humans raises serious concerns over how the virus is moving and adapting. Virologist Dr Tom Peacock has the details.   Also this week, thousands of eyes across America were turned to the skies to catch a glimpse of the total solar eclipse. But this event isn’t just a spectacle for the eyes – it’s a real scientific opportunity. Space physicist and electrical engineer Dr Nathaniel Frissell reveals his unusual approach to studying the eclipse via radio. And BBC reporter Georgina Rannard, who has been following the eclipse this week, tells Vic what other research scientists investigated during the four-minute window of darkness.  And don’t turn your eyes away from the sky just yet, as another celestial spectacle is set to occur. About 3,000 light-years away, a pair of orbiting stars called T Coronae Borealis are not normally visible from Earth. But every 80 years or so, one of the stars in the binary system explodes, creating a ‘new’ star in our night sky. But you’ll only have a day or two to spot it. Astrophysicist Dr Rebecca Smethurst joins Vic in the studio to talk about this once-in-a-lifetime star explosion.  And to close the show, the life and work of a legend. Nobel Prize-winning physicist Peter Higgs has died at the age of 94. Higgs’s biographer Professor Frank Close tells us how Higgs predicted the existence of a particle that’s fundamental to our understanding of the Universe and reveals the legacy he’s left behind.   Presenter: Victoria Gill 
Producers: Alice Lipscombe-Southwell and Ella Hubber 
Editor: Martin Smith 
Production Co-ordinator: Jana Bennett-Holesworth

Bird flu outbreak in cows

In 1824, 200 years ago, Megalosaurus was the first dinosaur to ever be described in a scientific paper. William Buckland studied fossils from Stonesfield in Oxfordshire in order to describe the animal.  In this episode, Victoria Gill visits palaeontologist Dr Emma Nicholls at the Oxford University Museum of Natural History, who shows her those very fossils that launched the new science of palaeontology. Danielle Czerkaszyn then opens the archives to reveal the scientific illustrations of Megalosaurus by Mary Morland, which helped shape Buckland's description. But this was just the beginning. Over the coming decades, remains kept being discovered and scientists were gripped with dinosaur mania, racing to find species. Now, in 2024, we're finding new dinosaurs all the time. Victoria travels to the University of Edinburgh to meet Professor Steve Brusatte and Dr Tom Challands as they start extracting a dinosaur bone from a piece of Jurassic rock - could this be a new species? Together, they reflect on how palaeontology has changed over the last 200 years and ponder the ongoing mysteries of these charismatic animals. Presenter: Victoria Gill
Producers: Alice Lipscombe-Southwell and Hannah Robins
Production Co-ordinator: Jana Bennett-Holesworth 
Editor: Martin Smith

200 years of dinosaur science

Microbiomes are a multi-million-pound industry. Every week, many people send off poop samples to be examined so we can learn about our own ecosystems of bacteria, virus and fungi that live in our guts, with a view to improving health. But how accurate are these tests? Microbiologist Prof Jacques Ravel is calling for better controls in what is currently an unregulated industry. He joins us along with Prof Tim Spector, scientific co-founder of personalised nutrition app ZOE, to discuss the areas of concern, and potential benefits, of this direct-to-consumer model.  Nobel prize-winning psychologist Daniel Kahneman has died at the age of 90. Widely acknowledged as one of the world's most influential psychologists, his many years of study centred on how and why we make the decisions we do. In 2011, his book Thinking, Fast and Slow, which summarizes much of his research, was published and became a best seller. We’re joined by presenter and author Claudia Hammond to unpick his legacy.  The price of lab monkeys has plummeted. Used for drug development and testing, their value skyrocketed during the vaccine development period of the pandemic. But when the boom for vaccines died, the demand for (and value of) these monkeys plunged. Journalist Eleanor Olcott provides the full picture.   Are there alternatives to animal testing? Marnie visits a lab in Cambridge to find out about neural organoids, cellular clumps grown from stem cells made to replicate the brain. Developmental biologist Prof Madeline Lancaster shows her around and Dr Sarah Chan from the University of Edinburgh digs into the ethics of this cutting-edge branch of science. Presenter: Marnie Chesterton 
Producers: Florian Bohr, Hannah Robins, Louise Orchard and Imaan Moin 
Editor: Martin Smith 
Production Co-ordinator: Jana Bennett-Holesworth   BBC Inside Science is produced in collaboration with the Open University.

Inside Your Microbiome

Professor and presenter, Chris Lintott, talks about his new book Our Accidental Universe; a tour of chance encounters and human error in pursuit of asteroids, pulsars, radio waves, new stars and alien life. Even with incredible technological developments, the major astronomical events of the past century are largely down to plain ol’ good luck; discovered not, as you might assume, by careful experiment, but as surprises when we have been looking for something else entirely. For instance, the most promising habitat for life beyond Earth turns out to be Saturn's tiny moon Enceladus, whose oceans were revealed when NASA's Cassini probe did a drive-by and, we get the most from the Hubble Space Telescope by pointing it at absolutely nothing!  A new company has launched which aims to mine Helium-3 on the moon to sell on Earth. This rare isotope is used for supercooling quantum computers and some scientists dream of using it in nuclear fusion as a new source of renewable energy. But is this ambition realistic and, if so, could it be within reach anytime soon? Planetary scientist Sara Russell of the Natural History Museum explains all.  There are many moons in our solar systems, but one of the strangest is Titan; the largest moon of the Saturn system. It gets colder than -100 degrees Celsius and has a thick atmosphere that creates weather. But its biggest mystery is the enormous, coffee-coloured dunes that cover a large part of its surface. Where did they come from? Planetary scientist Bill Bottke has a cunning theory.  In our universe, some stars are twins. They originate from the same molecular clouds and should be identical, but some pairs are not as similar as you’d expect. Marnie speaks to astrophysicist Yuan-Sen Ting about his new paper which illuminates how this difference might occur. His theory is that one of the stars, perhaps the evil twin, has been busy eating up vulnerable planets...  
 
Presenter: Marnie Chesterton 
Producers: Louise Orchard, Florian Bohr and Imaan Moin 
Editor: Martin Smith 
Production Co-ordinator: Jana Bennett-Holesworth   BBC Inside Science is produced in collaboration with the Open University.

A Possible Sequel to the Dinosaur Armageddon

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