The H5N1 strain of avian influenza is sweeping across the world, killing millions of birds. In the UK, it’s causing disastrous losses of seabirds – populations that were already being hit by a number of threats, including habitat loss, overfishing and global heating. Biodiversity reporter Phoebe Weston tells Madeleine Finlay about how the virus made it into wild birds, why it’s having such a devastating impact, and the long-term impact bird flu could have on some of our most vulnerable species. Help support our independent journalism at theguardian.com/sciencepod
This week, Nasa unveiled the first images from the James Webb space telescope – much awaited pictures that show our universe in glorious technicolour. The $10bn telescope, now 1 million miles from Earth, will allow scientists to look back to the dawn of time. Prof Ray Jayawardhana, who is working with one of the instruments onboard the JWST, speaks to Ian Sample about what these images show us, and what they mean for the very human quest of discovering our place in the cosmos.. Help support our independent journalism at theguardian.com/sciencepod
The varroa mite, a deadly honeybee parasite, has finally found its way into Australia. Varroa destructor affects every other major beekeeping area in the world, damaging honeybees and transmitting viruses across hives. Now, in a fight to contain the mite, the state of New South Wales has destroyed 1,533 infected hives and implemented a statewide standstill on bee movement. Madeleine Finlay speaks to Dr Cooper Schouten, a beekeper and researcher, about why the mite poses such a threat to honeybees, what it means to put bees into lockdown, and what impacts this biosecurity breech could have.. Help support our independent journalism at theguardian.com/sciencepod
The US supreme court’s decision to overturn Roe v Wade will have a significant impact on the reproductive health and the safety of women who become pregnant in the US. Researchers have estimated it could increase maternal mortality in the country by 20%. The ruling also sparked debates around men’s reproductive options, including the role of vasectomies in pregnancy and abortion prevention. Madeleine Finlay speaks to historian Georgia Granger about the history of vasectomies, why they’ve ended up as part of the conversation about women’s reproductive rights, and hears why male sterilisation won’t solve America’s abortion problem. Help support our independent journalism at theguardian.com/sciencepod
The UK is yet again facing a wave of Covid infections, with cases soaring by more than half a million in a week at the end of June. This time, the wave is driven by even more transmissible variants of Omicron known as BA.4 and BA.5. But with all Covid precautions gone, and many of us heading to bars, pubs, festivals and sporting events as the summer rolls on, is it much of a surprise? Ian Sample asks Prof Graham Medley if infections will translate into hospitalisations and deaths, and whether we can expect ongoing cycles of Covid waves in the months and years to come. Help support our independent journalism at theguardian.com/sciencepod
Last week, public health officials declared a ‘national incident’ after they found vaccine-derived poliovirus in London sewage samples. No cases of polio symptoms have been reported but there is evidence the virus is spreading. So what does it mean to have found the virus almost 20 years after the UK was declared polio-free? Ian Sample speaks to epidemiologist Nicholas Grassly to find out how worried we should be and what it means for the global effort to eradicate polio.. Help support our independent journalism at theguardian.com/sciencepod
When the Guardian’s UK technology editor Alex Hern was contacted on Twitter to ask if he was involved in a new cryptocurrency called Tsuka, he assumed they just wanted him to buy it. He ignored the messages. But soon after Alex realised that, without knowing it, he was already involved. What happened next reveals a lot about the strange world of ‘shitcoins’ – cryptocurrencies with no reason for existence beyond buying low and selling high. Madeleine Finlay speaks to Alex Hern about his shitcoin saga, and how the lines can get blurred between a gamble and a scam. Help support our independent journalism at theguardian.com/sciencepod
After wolves were reintroduced to Yellowstone national park in 1995, researchers noticed some big ecological changes, leading to the regeneration of the landscape. It’s an argument used to justify the return of apex predators – but it’s increasingly being challenged. Phoebe Weston talks to Ian Sample about whether wolves really have the power to shape ecosystems, and what that means for the debate about bringing them back to the UK. Help support our independent journalism at theguardian.com/sciencepod
They support an incredible array of biodiversity and may also be some of the world’s most effective carbon sinks. But vast swathes of seagrass meadows have been lost in the last century, and they continue to vanish at the rate of a football pitch every half hour. Madeleine Finlay makes a trip out of the Guardian office to visit a rewilding project in Hampshire. She speaks to marine biologist Tim Ferrero about the challenges of replanting seagrass meadows and what hope it offers.. Help support our independent journalism at theguardian.com/sciencepod
Last week an engineer at Google claimed that an AI chatbot he worked with, known as LaMDA, had become ‘sentient’. Blake Lemoine published a transcript of his conversations with LaMDA that included responses about having feelings and fearing death. But could it really be conscious? AI researcher and author Kate Crawford speaks to Ian Sample about how LaMDA actually works, and why we shouldn’t worry about the inner life of software – for now.. Help support our independent journalism at theguardian.com/sciencepod