Human embryos, Transit of Mercury, Fishackathon, Fat labradors

Human embryos, Transit of Mercury, Fishackathon, Fat labradors

In a major advance in the field of embryology, scientists this week have kept human embryos alive in petri dishes for record amounts of time. The legal limit for keeping fertilised human embryos in the lab is 14 days, a cut-off point set in 1979. Back then, scientists were able to keep embryos alive for only a few days, meaning the limit was only a theoretical one. Advances mean that this week, in 2 papers, researchers have reached that limit. Professor Ali Brivanlou, Robert and Harriet Heilbrunn Professor of Stem Cell biology and molecular embryology at Rockefeller University is lead author on one of the papers, and Professor Bobbie Farsides is a clinical and biomedical ethicist at Brighton and Sussex Medical School. They join Adam to discuss the next steps for embryology. Should this limit curtail research?

Next Monday is the transit of Mercury. 13 times a century, Mercury passes directly between us and the Sun, and creates a pinprick shadow, a pixel of black for about 8 hours. This strange planet has no atmosphere, but a lot explosive volcanic activity. It has an eccentric orbit - meaning its distance from the sun fluctuates wildly. A Mercury year is 88 Earth days, but a Mercury day lasts almost two mercury years. David Rothery is a professor of Planetary Sciences at the Open University. He reveals how scientists study this planet and explains how, and how not to view the transit of Mercury.

Overfishing is one of the biggest threats to the health of our oceans. According to the UN, up to a third of the world's fisheries are overexploited or depleted. It is a huge complex problem with many inputs and outputs to compute. So who better to tackle it than a team of hackers? Recently, coders around the globe gathered to take on the challenge, in a 48-hour Fishackathon. Reporter Anand Jagatia went along and reports back to Adam

Most dog lovers will know that Labradors are particularly keen to eat anything, all the time, at any time. As a result, some are a bit corpulent, even obese. The cause is likely to be in their genes. A new study in the current issue of Cell Metabolism has identified that genetic basis for the perpetual hunger. Eleanor Raffan from Cambridge University, geneticist and vet, led the study. She explains to Adam how she gathered a cohort of dogs.

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The mysteries of the ocean floor

The mysteries of the ocean floor

It’s often said we know more about the surface of the Moon than we do about the Earth’s deep sea, and a new study is backing that up. Research from the Ocean Discovery League says just 0.001% of the world’s deep seafloor has ever been seen by humans.We speak to lead author and deep sea explorer Dr Katy Croff Bell and marine biologist Dr Anna Gebruk from the University of Edinburgh, to ask whether we should be making more effort to investigate our oceans.As events take place to mark the 80th anniversary of Victory in Europe Day, presenter Victoria Gill also speaks to Professor David Edgerton from King’s College London to discuss what impact the Second World War had on scientific research and innovation.We’re also joined by Penny Sarchet, managing editor at New Scientist, to look through some of the top science stories you might have missed this week. And as David Attenborough celebrates his 99th birthday with the release of his latest film Ocean, we take a trip through the archives to hear some of his finest moments from more than 70 years of broadcasting.Presenter: Victoria Gill Producers: Clare Salisbury, Dan Welsh, Jonathan Blackwell Editor: Martin Smith Production Co-ordinator: Jana Bennett-Holesworth

5 Jun 28min

How vulnerable is our power supply?

How vulnerable is our power supply?

Severe power cuts hit Spain, Portugal and parts of France this week, cutting the lights and stopping flights, trains, and ATM machines in their tracks. The Spanish grid operator has said it’s ruled out a cyber-attack, but the reason behind what happened is still unclear. We speak to Keith Bell, Professor of Electronic and Electrical Engineering at the University of Strathclyde, and David Brayshaw, Professor of Climate Science and Energy Meteorology at the University of Reading, to ask whether the UK’s power supply could be just as vulnerable to a major blackout.Presenter Victoria Gill hears about how cyborg cockroaches are being developed to try to help at disaster scenes. We’re also joined by science journalist Caroline Steel to discuss the week’s standout science news. And we find out how a critically endangered salamander, the axolotl, could hold the biological key to repairing damaged spinal cords.Presenter: Victoria Gill Producers: Clare Salisbury, Dan Welsh and Gerry Holt Editor: Martin Smith Production Co-ordinator: Jana Bennett-Holesworth

29 Mai 28min

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 Mai 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 Mai 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 Mai 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 Mai 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

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