Four of the world’s biggest tech platforms are adopting a new set of commitments to tackle online abuse and improve women’s safety online. This is the first time there has been cross-industry collaboration on ways companies can address the issue. Web Foundation Senior Policy manager Azmina Dhrodia is on the show to explain how, while Azerbaijani journalist Arzu Geybulla tells us about some of the abuse she has received online.Wireless pacemaker that dissolves in the body A wireless pacemaker that can dissolve in the body has been created for patients who need only temporary help to regulate their heartbeat. Pacemakers can be used for short periods, especially after open heart surgery, but are associated with quite a few issues such as infection from leads or the dislodging of the power supply and damaging heart tissue on removal. Professor John Rogers from Northwestern University, Illinois in the US, has developed a battery-free pacemaker that can be implanted directly onto the surface of the heart and it can then be absorbed by the body when no longer needed. He’s on the programme to discuss the tech that made the invention possible.Reducing car pollution from tyres Future car pollution will mainly come from tyres, not the exhaust. Even now tyre and road wear pollution is one of the leading causes of microplastics in the air. Our reporter Jason Hosken has been investigating how technology can be used to reduce the harmful impacts of tiny tyre particles, that are released from vehicles as they drive along.(Image: Internet troll sending comment to picture on imaginary social media website with smartphone Credit: Tero Vesalainen/Getty Images)The programme is presented by Gareth Mitchell with expert commentary from Bill Thompson.Studio Manager: John Boland Producer: Ania Lichtarowicz