Every week a million more people move to live in cities. Can they cope with this constant expansion? Aleks explores whether 'Smart' cities are the answer or do they come with a hidden price of personal freedom. She visits the world's "smartest" city, Masdar in Abu Dhabi and explores the social engineering that's as much part of the design as the bricks and mortar.

Contributors: Physicist Geoffrey West, Urban Explorer Brad Garrett, Lean Doody from ARUP, Dr Iyad Rahwan, Architect and Artist Usman Haque.

Producer: Peter McManus.

Aleks Krotoski explores what technology tells us about ouselves and the age we live in. In this first programme; is the digital world allowing us to be more altruistic than ever?

So can true altruism exist online? With all the stories of cyber-bullying and trolling it's very easy to forget the random acts of kindness that the technology also allows. Aleks explores some amazing stories of online altruism. But when no good deed goes unpublished and you can keep score of your goodness through 'followers', 'likes' and the accompanying boosts to ego and reputation is truly selfless altruism online an impossibility? And in the end, if good gets done does it matter?

Contributors: Primatologist Frans De Waal, Psychologist Dana Kilsanin, Founder of Random acts of pizza Daniel Rodgers, YouTube DIY guru Chez Rossi

Producer: Peter McManus.