Cretaceous catastrophe fossilised, LIGO and Virgo, Corals, Forensic shoeprint database

Cretaceous catastrophe fossilised, LIGO and Virgo, Corals, Forensic shoeprint database

About 66 million years ago an asteroid at least 6 miles wide crashed into the Earth, in the shallow sea that is now the Yucatan Peninsular in Mexico. It gouged the Chicxulub crater 18 miles deep; threw 25 trillion tonnes of debris into the atmosphere, much of which was hotter than the Sun, created huge seismic waves and massive tsunamis churning the Gulf of Mexico, tearing up coastlines and peeling up 100’s of metres of rock. 75% of the Earth’s forest burned. Debris was thrown out across the Solar System and North America was showered by a fan of glassy molten rock droplets. This geological event marked the end of the Cretaceous period and the start of the Palaeogene. Most people accept that this massive event caused the last great extinction, the end of the dinosaurs and a period of intense cold. Many fossil finds back this theory up. But very little fossil evidence showing the impact of the actual event has been found. Until now. Hundreds of miles from Chicxulub in a fossil site called Tanis, in North Dakota, part of the vast Hell Creek formation, is a fossil find that depicts the turmoil 10's of minutes after the asteroid hit. Marine and freshwater fish are found tangled together with these glassy droplets crammed in their gills, Charred trees are mixed up with hundreds of mangled animal bones, amber perfectly preserving drops of what was molten Earth. It's got palaeontologists including Professor Phil Manning at Manchester University very excited.

The gravitational wave detectors LIGO and VIRGO have been recently upgraded and made more sensitive to the miniscule signals that denote ripples in gravity - gravitational waves. Professor Sheila Rowan of the University of Glasgow explains to Gareth Mitchell that she hopes that with this third run of the detectors, they will be finding not just one or two signals that provide evidence of massive events in our universe, but hundreds, maybe even thousands.

In the quest to understand how corals are affected by rising sea temperatures we need to understand the symbiotic relationship they have with dinoflagellates, the single-celled algae that live in, and use photosynthesis to make food for the coral. When coral gets too hot and undergoes 'bleaching', this is the algae leaving the coral. Yixian Zheng at the Carnegie Institution of Washington takes Roland Pease on a tour of her coral tanks and explains that she's hunting for a model coral organism to study this process at the genetic and molecular level.

A crime has been committed in the studio. Gareth's tea has been drunk and his biscuits have been nibbled. Luckily evidence was left at the scene of the crime - a shoeprint with distinctive wear patterns. One quick phone call and the director of the Leverhulme Research Centre for Forensic Science at the University of Dundee, Professor Niamh Nic Daeid is on the case. She's asking the public to help build up a database of footwear prints. The project is the largest ever study into the variation in footwear marks made by the same shoes across different surfaces and activities so that the variation observed can be used to explore links between the shoe and the mark it makes. In order to do this, she's asking thousands of individuals to take part in a large-scale citizen science project by taking pictures of their footwear and the marks they make. This will help the Dundee team build a substantial database for use in their research to aid the scientific validation of footwear marks as evidence for use in the criminal justice system.

Producer (and biscuit thief) - Fiona Roberts

Avsnitt(615)

What would cuts to Nasa mean for space science?

What would cuts to Nasa mean for space science?

Progress has been made in our search for alien life. So announced a team of scientists from Cambridge university last week who, using a powerful space telescope, have detected molecules which on Earth are only produced by simple organisms. All in all, it’s been a busy week for space science. And all against a backdrop of a US government request to cut NASA’s funding. The proposals would need to be approved by the Senate before any cuts are made. But scientists and journalists are asking what it could mean for the future of space science around the world. Science journalist Jonathan Amos and space researcher Dr Simeon Barber discuss.Professor of Planetary Sciences at the Massachusetts Institute of Technology Richard Binzel updates the programme on plans to learn from an asteroid called Apophis, due to fly past us in four years time. Back on Earth, or rather in it, Victoria Gill gets up close to Roman remains which show that gladiators once fought lions. And Tim O’Brien, Professor of Astrophysics at the University of Manchester joins Victoria Gill in the studio to discuss the week’s other science news. Presenter: Victoria Gill Producers: Clare Salisbury, Jonathan Blackwell, Debbie Kilbride Editor: Colin Paterson Production Co-ordinator: Josie Hardy

22 Maj 29min

Answers to Your Science Questions

Answers to Your Science Questions

We’ve thrown open the airwaves to you. Marnie Chesterton puts your science questions to Penny Sarchet, Managing editor of New Scientist, Mark Maslin, Professor of Earth System Science at University College London and Catherine Heymans, Astronomer Royal for Scotland and Professor of Astrophysics at the University of Edinburgh. So, if you’ve ever wondered why planets are round… or what geese are saying to each other as they fly in groups through the sky, listen in for the latest science and some educated hypothesising. Presenter: Marnie Chesterton Producers: Dan Welsh & Debbie Kilbride Editor: Martin Smith Production Co-ordinator: Jana Bennett-Holesworth

15 Maj 28min

How can science help us fight wildfires?

How can science help us fight wildfires?

In the past few days, UK firefighters have been tackling wildfires across the UK. As global temperatures rise, fires are likely to increase in strength and number. We hear from Rory Hadden, Professor of Fire Science at the University of Edinburgh, and Aidan McGivern, meteorologist and weather presenter from the Met Office.Presenter Marnie Chesterton has been behind the scenes at Cambridge’s Natural History Museum with Assistant Director of the University Museum of Zoology Jack Ashby.Also, the woman who came third in the Brighton marathon in the middle of her hen weekend. We hear from Dr. Ann-Kathrin Stock, neuroscientist at Dresden University Clinics and member of the international Alcohol Hangover Research Group about the science behind hangovers and why it might not be such a good idea to run a marathon whilst hungover.And science journalist Caroline Steel has been scouring the science journals.Presenter: Marnie Chesterton Producers: Clare Salisbury, Dan Welsh, Jonathan Blackwell Editor: Martin Smith Production Co-ordinator: Jana Bennett-Holesworth

8 Maj 35min

Is this finally the moment for UK tidal power?

Is this finally the moment for UK tidal power?

Why does the UK, an island shaped by its strong tides, still not have any major tidal energy schemes? Plans for tidal barrages in the UK seem to be regularly discussed but never come to fruition, but now a new report has suggested that a tidal lagoon should be created in the Severn Estuary to generate electricity. Guest presenter Tom Whipple speaks to Chair of the Severn Estuary Commission, Dr Andrew Garrad, about whether this will finally be the moment for tidal power that we’ve been waiting for. Also, earth scientists around the world are trying to understand why the 7.7 magnitude earthquake which struck Myanmar last weekend was just so devastating. Dr Ian Watkinson, structural geologist at Royal Holloway university, tells us about a theory that a seismic event called a ‘supershear earthquake’ took place. And a new bat is causing controversy in the baseball world! The ‘Torpedo Bat’, engineered by an MIT physicist, has helped the New York Yankees crush records in Major League Baseball. Steve Haake, Professor of Sports Engineering at Sheffield Hallam University explains why this bat has helped hitters hit so many home runs. Science journalist Caroline Steel drops in with her picks of the week’s news, including a new blood test for Alzheimer's disease, a potential new super collider and a new way to identify which bees are most hygienic. Presenter: Tom Whipple Producers: Clare Salisbury, Dan Welsh, Jonathan Blackwell Editor: Martin Smith Production Co-ordinator: Jana Bennett-Holesworth

1 Maj 28min

Is everything we know about the universe wrong?

Is everything we know about the universe wrong?

For the last week or so, the world of physics has had just one conversation.Have we found a new way of understanding the universe? And if so, what does this mean for our understanding of how we all came to exist – and even our fate? These big questions were prompted by new data from the Dark Energy Spectroscopic Instrument team at the Kitt Peak National Observatory in Arizona. To explain what was found, whether it’s right and just how excited we should be, we’re joined by astrophysics professor Catherine Heymans and cosmologist Andrew Pontzen. Also this week, what became of the Winchcombe meteorite? We attempt to explain some seriously advanced maths in less than two minutes, and Penny Sarchet from the New Scientist brings us her picks of the week’s science news. Presenter: Marnie Chesterton Producers: Gerry Holt, Ella Hubber & Sophie Ormiston Reporter: Gareth Mitchell Editor: Martin Smith Production Co-ordinator: Jana Bennett-Holesworth

24 Apr 28min

Wild birds in crisis

Wild birds in crisis

Every species of wild bird in the UK is continuing to decline at a stark rate – according to the latest data. Guest presenter Ben Garrod wants to understand why wild birds are in trouble despite government promises to halt nature decline by 2030. Ben goes birdwatching in Norfolk to see the impact for himself and then heads back to the studio to hear about the kind of threats birds face and what is happening to tackle the problem. Also this week, after two stranded Nasa astronauts were finally brought home to Earth following a nine-month stint in space, we ask why it was such a big moment for SpaceX – and what this might mean for Nasa. Science journalist Caroline Steel drops in with her picks of the week’s news, including dark oxygen and floating iguanas, and we find out what makes a good day according to science... Presenter: Ben Garrod Producers: Dan Welsh, Sophie Ormiston & Gerry Holt Field Producer: Stephanie Tam Editor: Martin Smith Production Co-ordinator: Jana Bennett-Holesworth  To discover more fascinating science content, head to bbc.co.uk search for BBC Inside Science and follow the links to The Open University.

17 Apr 28min

Are boys doing better than girls at maths and science?

Are boys doing better than girls at maths and science?

There’s a big “gender gap” between boys and girls in maths and science - that’s according to a new report out this week. Boys in England in years five and nine are now “significantly” outperforming girls in both subjects, the Trends in International Mathematics and Science Study suggests. Ben Garrod is joined by physicist Dr Jess Wade, from Imperial College London, and maths teacher and National Numeracy ambassador Bobby Seagull, to discuss the issue. Also this week, we discuss the mind-blowing effects of living in space on the human body and science journalist Caroline Steel joins us with her picks of the week’s science news, including the environmental impact of the North Sea collision and a study that suggests scientists should be cracking more jokes... Presenter: Professor Ben Garrod Producers: Sophie Ormiston & Gerry Holt Editor: Martin Smith Production Co-ordinator: Jana Bennett-Holesworth  To discover more fascinating science content, head to bbc.co.uk search for BBC Inside Science and follow the links to The Open University.

10 Apr 28min

Better Than Gold: Critical Minerals

Better Than Gold: Critical Minerals

Critical minerals have hit the headlines of almost every news outlet this week as US President Donald Trump made his desires to mine them in Ukraine clear. These precious resources are a hot geopolitical bargaining chip thanks to our reliance on them in everything from mobile phones to wind turbines. This week, Inside Science unearths everything you need to know about critical minerals; what they are, why they’re critical, and what we do when there’s no more left to mine. Also this week, we come to the end of a laborious seven-year journey of collecting and identifying Scotland’s most valued Jurassic fossil. And Nature journalist Lizzie Gibney brings us her pick of the week’s science news, including moon landers and woolly mice. Presenter: Marnie Chesterton Producers: Sophie Ormiston, Gerry Holt, Ella Hubber Editor: Martin Smith Production Co-ordinator: Jana Bennett-Holesworth To discover more fascinating science content, head to bbc.co.uk search for BBC Inside Science and follow the links to The Open University.

3 Apr 28min

Populärt inom Vetenskap

p3-dystopia
svd-nyhetsartiklar
dumma-manniskor
allt-du-velat-veta
det-morka-psyket
kapitalet-en-podd-om-ekonomi
rss-ufo-bortom-rimligt-tvivel--2
rss-vetenskapsradion
sexet
rss-vetenskapspodden
medicinvetarna
bildningspodden
paranormalt-med-caroline-giertz
rss-i-hjarnan-pa-louise-epstein
rss-vetenskapsradion-2
a-kursen
hacka-livet
vetenskapsradion
rss-spraket
dumforklarat