Review the history of domestic architecture through the millenia. Our ancestors huddled in caves. Nowadays, many of us are tenants in large housing complexes. All too often, rents and property prices are out of control. How did it come to this?

Tenants, landlords and local politicians are confronted with a serious problem. Proposals for the compulsory purchase of apartment buildings by the city and stricter rent controls have triggered a sometimes heated debate.

Diajeng Lestari is a young entrepreneur in Jakarta. Eight years ago, she spotted a gap in the market and founded HIJUP, an ecommerce site for Muslim fashion.

People feel very differently depending on the acoustics of the built spaces they frequent. Echoing or muffled, voluminous or constrained -- sounds are important. Workplaces, restaurants and shops can be designed to make the experience more pleasant.

Shops play music to persuade us, often subliminally, to buy more. There are many contexts in which sounds influence our mood or decision-making. And music has measurable effects on other animals – and even bacteria!

Our resident wise man Olaf Krieger says it is important to take a true break during the working day. He demonstrates the benefits by heading to a tranquil refuge, far from the office.

We meet German YouTube star Alexibexi. He is a role model for many youngsters, earning big bucks with his videos. Schoolkids dream of such a career, and the advertising industry sees there is money to be made here.

Waldemar Zeiler is the epitome of Generation Y entrepreneurship. His colleagues work when they want to and take many decisions themselves. He says change begins with business; he's brought some young movers and shakers together in Berlin.

Educated, independent-minded and determined – members of Generation Y are reshaping the world of work. For one thing, they have to explain the digital economy to aging bosses.

Japanese society is still largely governed by traditional assumptions. Asuka Otani is challenging those attitudes with gender neutral underwear. We meet the young entrepreneur.