Multiply each other. Yep, the future of our cities theyre the engines of the world economy, driving 80 of Global Economic activity. And despite taking up just 2 of the planets landmass, cities are the home to well over half of the worlds population. And that share is growing rapidly, set to be nearly 70 by 2050. Im going to be discussing all of that with these two. There they are. Ones a Top Urban Expert whos worked with 400 cities on everything from Transport To Demographic Change and climate planning. And the leader of one of the worlds most liveable cities, known as australias garden city. Were going to find out from the mayor of melbourne why its so appealing. And how do you balance the needs of five Million People living side by side . Also on the show, were going to take a look at what it takes to create our spaces. Im going to bejoined by the big boss of autodesk. Its the worlds top Software Designers for architects. Wherever yourejoining me from Around The World, once again, a