It’s been a busy week in the world of artificial intelligence. OpenAI found itself in hot water with Scarlett Johansson after launching its new chatbot, Sky, drawing comparisons to the Hollywood star’s character in the sci-fi film Her. In South Korea, the second global AI summit took place, and a report from the Alan Turing Institute explored how AI could influence elections. The Guardian’s UK technology editor, Alex Hern, tells Madeleine Finlay about what’s been happening. Help support our independent journalism at <a href="https://www.theguardian.com/sciencepod">theguardian.com/sciencepod</a>

Concrete is strong and durable – which is why it’s the basis for so much of our infrastructure. It’s also terrible for the planet, due to one key ingredient: cement, which is responsible for almost 90% of concrete emissions. Researchers have now found a way to recover old cement while also reducing the environmental impact of recycling steel. Madeleine Finlay speaks to Julian Allwood, professor of engineering and the environment at the University Of Cambridge, to find out how the process works, and what it could mean for the emissions generated by the construction industry. Help support our independent journalism at <a href="https://www.theguardian.com/sciencepod">theguardian.com/sciencepod</a>

On Tuesday a British man died and several others were injured when their plane encountered severe turbulence between London and Singapore. And it looks like this kind of turbulence is something we’ll have to get used to. Last year a study found severe clear-air turbulence had increased by 55% between 1979 and 2020. Ian Sample speaks to Guy Gratton, associate professor of aviation and the environment at Cranfield University, to find out why this is happening, and whether there’s anything we can do to reverse the trend.. Help support our independent journalism at <a href="https://www.theguardian.com/sciencepod">theguardian.com/sciencepod</a>

Right now, across much of the midwestern and eastern US, trillions of cicadas are crawling out from the soil. And this year is extra special, because two broods are erupting from the ground at once. The first brood hasn’t been seen for 13 years, the other for 17 years and the last time they emerged together Thomas Jefferson was president. Ian Sample speaks to entomologist Dr Gene Kritsky to find out what’s going on, why periodical cicadas emerge in cycles of prime numbers and how they keep time underground. Help support our independent journalism at <a href="https://www.theguardian.com/sciencepod">theguardian.com/sciencepod</a>

Last week the founder of the dating app Bumble forecasted a near future dating landscape where AI ‘dating concierges’ filter out prospective partners for us. But does AI, or even science, really understand what makes two people compatible? Madeleine Finlay speaks to Amie Gordon, assistant professor of psychology at the University of Michigan, to find out what we know about why two people go the distance, and why she and her colleague associate professor of sociology Elizabeth Bruch, are designing their own dating app to learn more.. Help support our independent journalism at <a href="https://www.theguardian.com/sciencepod">theguardian.com/sciencepod</a>

As AI systems have grown in sophistication, so has their capacity for deception, according to a new analysis from researchers at Massachusetts Institute of Technology (MIT). Dr Peter Park, an AI existential safety researcher at MIT and author of the research, tells Ian Sample about the different examples of deception he uncovered, and why they will be so difficult to tackle as long as AI remains a black box. Help support our independent journalism at <a href="https://www.theguardian.com/sciencepod">theguardian.com/sciencepod</a>

Sales of cottage cheese are booming thanks to a boost from protein-hungry social media influencers. But do we really need all this extra protein? Madeleine Finlay speaks to Joanne Slavin, a professor of food science and nutrition at the University of Minnesota, to find out what exactly protein is doing in our bodies, and what happens to it when we consume it in excess. Help support our independent journalism at <a href="https://www.theguardian.com/sciencepod">theguardian.com/sciencepod</a>

A study has found that more than two dozen US coastal cities are sinking by more than 2mm a year. It’s a similar picture across the world. Nearly half of China’s major cities, as well as places such as Tehran and Jakarta, are facing similar problems. These issues are compounded by sea level rises caused by global heating. Madeleine Finlay speaks to Prof Manoochehr Shirzaei of Virginia Tech University and Prof Robert Nicholls of the University of East Anglia to find out what’s making our cities sink and whether anything can be done to rescue them from the sea. Help support our independent journalism at <a href="https://www.theguardian.com/sciencepod">theguardian.com/sciencepod</a>

Glioblastomas are an extremely aggressive type of brain tumour, which is why the news this week of a vaccine that has shown promise in fighting them is so exciting. And this comes right off the back of the announcement of another trial of the world’s first personalised mRNA vaccine for melanoma, a kind of skin cancer. Ian Sample talks to Prof Alan Melcher of the Institute of Cancer Research about how these vaccines work and whether they could one day be used to target cancer before it is even detectable on scans. Help support our independent journalism at <a href="https://www.theguardian.com/sciencepod">theguardian.com/sciencepod</a>

Guardian Seascapes reporter Karen McVeigh tells Madeleine Finlay about a recent trip to the Galápagos Islands, where mounds of plastic waste are washing up and causing problems for endemic species. Tackling this kind of waste and the overproduction of plastic were the topics on the table in Ottawa this week, as countries met to negotiate a global plastics treaty. But is progress too slow to address this pervasive problem?. Help support our independent journalism at <a href="https://www.theguardian.com/sciencepod">theguardian.com/sciencepod</a>