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Did China steal the plans for much of its military hardware, like the J20 jet, from Western defence firms? And what has the US been doing to counter Chinese hacking?Ed Butler speaks to Garrett Graff, a journalist for Wired magazine who has been following the twists and turns in US-China cyber relations over the past few years, including a hacking truce secured by President Obama, that broke down after he left the Oval Office. Plus Ian Bremmer, president of the risk consultancy Eurasia Group, explains why he fears that we are seeing a widening split in the tech economy between China and the West, and that this may be paving the way to a more dangerous real-world conflict.(Picture: A J-20 jet performs at Zhuhai Air Show in China; Credit: STR/AFP/Getty Images)

Revenge of the nerds - how comedians are helping explain the world of science and tech. Reporter Elizabeth Hotson finds out how people are forging careers from our desire to know how the world works. We get a practical demonstration from Natasha Simons a science performer and writer. Ron Berk, Emeritus Professor at the Johns Hopkins University in Maryland explains why he creates musicals about biostatistics and measurement. Helen Arney, co-founder of the Festival of the Spoken Nerd gives us a taste of science stand-up comedy and Jorge Cham, creator of PhD comics and co-host of the podcast ‘Daniel and Jorge explain the universe’, puts the fun into string theory.Pic credit: Getty images

There’s a shortage of affordable and social housing in most large urban centres around the world. But the construction sector is blighted by inefficiency and low productivity, and many say it’s ripe for disruption. Could modular or factory-built homes be the answer? We visit the factories and hear from two UK house-building ‘disruptors’; Rosie Toogood CEO of Legal and General Modular Homes and Nigel Banks at Ilke Homes. Mark Farmer of Cast Consultancy explains what’s been holding back innovation and Richard Threlfall, Partner and Global Head of Infrastructure at consultants KPMG gives us his take on the prospects for factory-built homes globally. Plus Rudy van Gurp from Dutch construction company Van Wijnen on why this may just be the cusp of big changes about to take over the construction industry.Picture description: A crane taking modular home segments and stacking them on one on top of the other to make a new duplex. Picture Credit: Hyoung Chang/The Denver Post via Getty Images