Space junk.

It might sound like an out-of-this-world problem that we don’t need to worry about here on Earth – but is it?

As we send more and more metal in the form of satellites up into space, scientists are warning it is becoming more of a risk both here – and up there.

We dig into the problem and what’s being done to clean it up.

Also this week, we answer a listener question about oceans and their influence on global temperatures, and we ponder the use – and sometimes abuse – of scientific language.

And with the Paris Olympics well under way, how much does sex affect sporting performance?

Presenter: Victoria Gill

CERN’s plans to build a bigger, faster particle collider, with a hefty 17 billion Euro price tag, are in question. Physicists Andrew Pontzen and Harry Cliff discuss if the new machine is really worth it.

A place on the podium or disappointment in the Olympics can come down to the precise position of a foot or angle of the hips. Science reporter Ella Hubber visits the University of Bath to check out the motion capture tech that makes these measurements.

75 years after making a groundbreaking discovery, Rosemary Fowler has finally been awarded with an honorary doctorate. University of Bristol chancellor, Sir Paul Nurse, shares how important it is to celebrate and recognise Rosemary’s achievements.

Presenter: Victoria Gill

Antarctica is a 'natural reserve, devoted to peace and science' - that’s according to an international treaty.

But with visitor numbers at a record high, how does tourism fit into that – and what kind of impact is it having on its fragile ecosystem? We discuss whether tourists – and even scientists – should be allowed to go at all.

Swimming in the Seine has been banned for more than a century because of pollution concerns. The main culprit? Human waste. We find out if it really will be safe in time.

And every summer we ready ourselves for 'flying ant day' – that one day where winged ants take to the skies across Britain. Or do they?

Presenter: Victoria Gill

We visit Wimbledon’s iconic Centre Court... but we’re not interested in the tennis, we want to know all about the grass.

Just how important is science to cultivating the perfect playing surface?

Also this week, we discuss the aims and ethics of human stem-cell-based embryo models in research after a new code of practice for the UK made headlines.

And we answer a listener question about whether white paint could help tackle climate change.

Send your burning science questions to [email protected].

It’s election time but over here in Science Land, we’re heading off to the seaside for our summer special.

We chat seagulls with Professor Paul Graham on Brighton beach and find out why they are so misunderstood - from what we call them to why they pinch our chips.

We bust some sun safety myths with dermatologist Dr Jess Felton and find out why ice cream is such a chemical marvel with chef Terri Mercieca.

And we join in the festivities at the Royal Society’s Summer Science Exhibition.

Presenter: Marnie Chesterton

As another week of disruptive Just Stop Oil protests grabs media attention, sociologist Dana Fisher discusses which actions might help a cause - and which could harm it.

Japanese scientists have developed artificial skin for robots made from real human cells. Inside Science producer Dr Ella Hubber digs into the uncanny invention.

Inside Science reporter Patrick Hughes goes on the trail of methane emissions from landfills.

And, as a heatwave smothers the UK, physiologist Damian Bailey helps us figure out what the perfect temperature for a human is.

Presenter: Marnie Chesterton

Taylor Swift fans danced so hard they made the ground shake at her recent Edinburgh gig so this week we’re meeting Earth Scientists Emma Greenough and James Panton to measure the Cardiff show - and explain some Swiftie Seismology.

We’re joined by the BBC’s disinformation and social media correspondent Marianna Spring and Cardiff University's Professor Martin Innes to talk the science of tracking election disinformation on social media.

What’s in the election manifestos? BBC science correspondent Pallab Ghosh explains all.

And Marnie dashes to Kew Gardens to meet horticulturalist Solene Dequiret, hoping to be in time to see two very foul-smelling plants in very rare bloom.

Nose pegs at the ready...

Presenter: Marnie Chesterton

Elon Musk’s implanted brain chip, Neuralink, is coming to the UK for clinical trials. Is controlling computers with our minds a future reality or is it all hype? Neuroscientists Dean Burnett and Christina Maher weigh in.

Zoologist Jules Howard ponders the strange effects drugs in our sewage have on frogs from his garden pond.

How do we measure the distance to distant galaxies? Astrophysicist Edward Gomez answers a listener's burning question.

And a 101 on blood groups from Dr Lise Estcourt.

Presenter: Marnie Chesterton

The looming danger of antibiotic resistance may have fallen out of the public consciousness but is still very much in the mind of those in public healthcare and research. As promising new research is published, the University of Birmingham’s Laura Piddock and GP Margaret McCartney get to the bottom of why antibiotic resistance is still so difficult to tackle.

Marine biologist Helen Scales joins us in the studio to talk about her new book “What the Wild Sea Could Be” which uses changes in the Earth’s past to predict what we can expect to happen to our oceans in the coming years.

Cosmologist Andrew Pontzen speculates on what happens in and around the extreme environment of a black hole as news of the first observations of the “plunging zone” comes to light.

And as the EU head to ban smoky flavoured crisps we ask what the science behind this decision is with Food scientist Stuart Farrimond.

Presenter: Marnie Chesterton

Guest presented by Liz Bonnin.

We all instinctively know that sleep is incredibly important but science doesn’t actually have a satisfying answer for why we need to sleep. There are multiple theories, but now, new research from Imperial College London has suggested that the leading idea might actually be incorrect. Science journalist Ginny Smith explains.

Nearly 80 years ago, one of the rarest elements in the world, promethium, was first discovered, but it’s properties have only now been revealed. Andrea Sella, Professor of Chemistry at University College London, tells us what this means.

What’s the scariest animal on the planet? Lions, crocodiles, or maybe tigers might come to mind. Yet a recent study has found that animals around the globe fear our voices far more than sounds of any other predators. Professor Liana Zanette explains how her research could help conservation efforts.

Finally, we answer one of your questions. Listener Mary Evans got in touch to ask: ‘do you think it's likely that people who are widely travelled and used to eating local food and drinking tap water would have more diverse bacteria in their gut?’ Expert on all things microbiome, Megan Rossi, joins us in the studio to answer Mary’s query. If you have any questions you think we can tackle, you can always email us at [email protected].

Presenter: Liz Bonnin