Whether it is the growth in co-working spaces around the world full of 20 and 30-somethings starting their own thing, to TV shows on entrepreneurship, all the way to the big successes out of California’s Silicon Valley, the millennial generation are attracted to starting their own businesses. However, it is not just about making money but also about passion and doing good.Christine Selph from Deloitte and professor Ethan Mollick from the Wharton School of Business give us an overview of this generation and of entrepreneurship. We go to a session run by Pop Up Business School to speak to some millennials about their motivations. Ayzh founder Zubaida Bai and Upstart founder Richard Dacalos tell us about the power of social entrepreneurship to solve problems which can be neglected by governments, while former World Bank economist Charles Kenny cautions us about focusing too much on the individual at the expense of government.Presenter and producer: Nastaran Tavakoli-Far Editor: Andrew Smith

We can now curate who we talk to in a way that wasn’t thinkable when a bulky landline phone sat in a corner of a house and rang with anonymous urgency. The screens on our devices allow us to communicate in any number of quick, cheap but silent ways.These modern technologies are very useful, which is why they are so ubiquitous, but are they taking something from us that is deeply human? Sandra Kanthal asks why we choose to text instead of talk, and if this incredibly popular form of communication is changing the way we interact and relate with each other. Contributors:Gary Turk - Spoken Word Artist/PoetSherry Turkle - Professor of the Social Studies of Technology, MIT and Author, Reclaiming Conversation: How To Talk In The Digital AgeSophie Scott - Director of the Institute of Cognitive Neuroscience, University College LondonMary Jane Copps - Owner, The Phone LadyChetan Deshpande - Digital Sales and Profit Consultant

Physical scars can be sources of shame or badges of honour: acquired accidentally or a cry for help. How should we read them, and what do they tell us about ourselves and our place in the world?We explore the practice of scarification, intentional body modification which has been practised for millennia, where scars denote status within tribal communities and are worn with pride. Brent Kerehona tells us about the type of scarification he has: Ta Moko. We meet stuntman Andreas Petrides, who has been Obi-Wan Kenobi’s stunt double. He also wears his scars with pride, but for different reasons: they are trophies of his profession.For millions, scars can be sources of embarrassment. We examine the constructs of beauty that might underpin those feelings. We speak to Hemani Modasia, who suffered scarring from burns to 35% of her body when she was a child, and who wishes, ultimately, she never had them. Scars can also be interpreted as a cry for help, transversing the space between the physical and the deeply emotional. Japanese photographer Kosuke Okahara tells us about his project which captured the scars of Japanese women who suffered from self-harm across a period of 6 years. Former Vogue editor Jackie Dixon, tells us the fashion industry is now embracing scars - they are part of the zeitgeist. We spoke to Jackie at a photoshoot in central London, where she was photographing a model for a book she is producing that celebrates scars.The programme also hears from Professor Parashkev Nachev, a neurologist at University College London, and Nichola Rumsey, founder of the Centre for Appearance Research at the University of the West of England. Parashkev tells us the creation of scars is not fully captured by science, suggesting they are both deeply mysterious and profoundly human. Nichola places scars in a social context, and points out they often render us outliers which, for many people, is challenging and uncomfortable.Presenter: Christopher Gunness Producer: Oliver Newlan Editor: Carl Johnston(Image: Hemani Modasia. Credit: Spencer Murphy for the Scar Free Foundation)

Dystopic fiction is going through a bit of a boom at the moment, but why is it that we can’t seem to get enough of stories where ordinary people struggle to survive against an all-powerful state, or in a post-apocalyptic world? Is it because they reflect the anxieties we already feel about the world we live in, or because they allow us to escape it? Shabnam Grewal asks: Why is dystopic fiction so appealing?Produced and presented by Shabnam Grewal Editor: Andrew Smith(Photo: Destroyed cityscape. Credit: Stock Photo/Getty Images)

The trauma of sexual assault is both personal and brutal. But what may be an indisputably traumatic event for one person is often challenged by another, and the responsibility for events gets scattered in the process. Why is it so common for people to look for reasons to blame the victims of sexual assault for what has happened to them? Nastaran Tavakoli-Far finds multiple reasons from this, speaking to experts and to victims. We hear from Dr Mithu Sanyal about the role of long-standing attitudes towards gender and sexuality. New York Times journalists Jodi Kantor and Megan Twohey tell us about power and the workplace and who is more likely to be believed. Dr Jackson Katz and Dr Laura Niemi explain the roles of both group dynamics and the language we use and how these often work to protect perpetrators rather than to support victimsPresenter and producer: Nastaran Tavakoli-Far Editor: Andrew Smith (Photo: Protest sign held up during 'Slut Walk' protests against victim blaming in Munich, Germany / Credit: Alexander Pohl / Nur Photo / Getty Images)

It’s the festive season, which means there are lots of parties going on. If you’re planning a party, what kind of celebration will it be? Organising the right food, drink and, crucially, guest list requires time and effort. Party planning has been listed as one of the most stressful professions you can have so, in the spirit of the season, in this edition of the Why Factor, Sandra Kanthal is asking: why is it so hard to plan the perfect party?Contributors: Claire Derrick: Co-founder, The Event Academy Rosie Hart: Course Director, The Event Academy Kim Glasgow and Henry Khan: Students, The Event Academy Liz Taylor: Managing Director, Taylor Lynn Corporation Robin Dunbar: Professor of Evolutionary Psychology – Oxford University Priya Parker: Author, The Art of Gathering – How We Meet and Why It Matters

Resilience is one of the buzzwords of the moment with multiple self-helps books and motivational speakers all promising us we can learn to be resilient, and use this skill to manage our pain. But what exactly is resilience and why does it help some people to cope better in times of stress than others?In this Why Factor, Abby Hollick examines why some people, in the face of trauma, seem to be extraordinarily resilient and tests her own inner reserves to discover if she is naturally resilient or not.Dr David Westley, head of psychology at Middlesex University Ann Masten, professor at the University of Minnesota Lucy Wairimu Mkuria, psychologist Dr Nimmi Hutnik, author of Becoming Resilient: Cognitive Behaviour Therapy to Transform Your Life Melanie Reid, journalist for The Times Dr Atle Dyregrov, clinical psychologist and Director of the Centre for Crisis Psychology in Bergen.Presenter and Producer: Abby Hollick Editor: Andrew Smith(Photo: Man being rescued by two firefighters. Credit: Getty Images / Stock Photo)

An exploration of why and how music can exert a powerful effect on our emotions. Why does one particular collection of notes make us want to get up and dance, and another calm us down? Edwina Pitman hears from record producer turned neuroscientist Daniel Levitin about how our brains process music and from psychologist Victoria Williamson about how we react to the memories that sounds trigger. Renowned Hollywood film composer Brian Tyler demonstrates how he creates music that reflects the many shades of emotional grey between happy and sad, and Emmanuel Jal, the South Sudanese-Canadian musician and former child soldier, reveals how music helped him come to terms with the trauma of his childhood.Guests: Bryan Tyler - film composer and conductor Dr Daniel Levitin - neuroscientist, and Founding Dean of Arts & Humanities at The Minerva Schools at KGI and author of This Is Your Brain On Music Dr Victoria Williamson - Lecturer in Music Psychology at the University of Sheffield and author of You Are The Music Rob Wood - founder of Music Concierge Bibi Heal - opera singer Emmanuel Jal - singer and musicianPresented and produced by Edwina Pitman Editor: Andy Smith

Many men believe their gender is under siege from a welter of criticism about male attitudes and behaviours. Not everyone accepts the idea of a masculinity crisis, but this programme looks at the concept of the “man box” – a set of attitudes and assumptions which many males struggle to deal with. Artist Grayson Perry joins the discussion. Presenter: Michael Blastland Producer: Anna Meisel Editor: Andy Smith(Photo: James Mace, Barber. Credit: Ian Burt)

Asked to describe your grandparents, you may conjure fond childhood memories of trips to the park or going round for your favourite dinner after school. You may live just around the corner and see your grandparents daily or they might be a welcome voice on the phone, brightening your day from afar.Elaine Chong discovers just why it is that grandparents matter so much to us and she finds out what happens when grandparents step in to raise their grandchildren. In the township of Umlazi, near Durban in South Africa, she meets a group of grandmothers who are raising their grandchildren singlehandedly, after the children lost their parents in the Aids pandemic. She uncovers research showing grandmothers have played a vital role in the survival of their grandchildren for centuries, especially before modern medicine and support services existed. She hears the incredible story of an 11-year-old boy who is being raised by his grandparents and repays their devotion, by saving his grandad’s life. Have you ever stopped to consider why your grandparents hold such a dear place in your heart? Elaine hears evidence all those childhood visits, trips and gatherings play an important and lasting role in shaping our personalities. Presenter: Elaine Chong Producers: Ben Robinson, Nicola Dowling and Carl Johnston Editor: Andy Smith(Photo:Grandmother’s at the Community Centre, Umlazi, South Africa. Credit Nkosinathi Shange)