 It's estimated that about 3 million people move to cities every week around the world. And today, the population in urban areas is 55 percent and anticipated to go to 68 percent. And as has been said, many of these are happening in Asia. There are 37 mega cities now, mostly in Asia, housing more than 600 million people. And this is anticipated to continue to grow. Our lives in these cities are integrated, affected by the physical sciences. And we need to be able to understand this very complex mix of this relationship in order to deal with our environment. Let's take, for example, these two big cities that are from the countries that are big emitters of CO2, U.S. and China. From the energy point of view, the U.S. have been fairly stable in this consumption. However, the wasted energy in the production and transportation is 68 percent. In China, we see phenomenon growth, and there are wasted energy in the process is beyond 80 percent in 2010 statistics. Why is this the case? That's because we are all subjected to the laws of thermodynamics. And Ginsburg theorem says it well. Number one, we have to play the game. We are all part of the system. Number two, you can win because you can never get more out of the system that you put in. Number three, you can't even break even because there are going to be losses in any system. And number four, the system will continue to degenerate. However modern Asia does provide us with good free abundance of energy, question is what do we do with it? And how can we tap on that in the design and development of our cities and our communities? If we have infrared thermographic eyes, this is what you will see, the kind of impact of flow of energy from our buildings with the environment. If we do not do our buildings, design our buildings and our cities well, we're going to suffer these consequences of energy wastage as well as affecting thermal comfort. What do we need to do is that we need to have a human-centric approach to design of our cities and buildings. We need to take particular attention to details because the details is what makes the building work or not work. There are sophisticated tools that we can use now, computational tools that can be applied through the process. This is an EcoCity project that I did in China where we simulated the air flow as well as the temperature distribution coupling inside and outside. Strangely, this is not even done commonly, even today. Another good example is the Singapore National Library building, which was designed in 2000. We designed it for 17% below the, at that time, the norm. And within the first year, we met the target. Now this building is operating at 20% even further below the original target because we designed it to be future proof so that the system can be adapted to change of use, setting of temperatures, et cetera, depending on the occupant need. Building 20 to 30 or even 40% is not going to help us moving forward to abate carbon emission because we are just not hitting the target. We need to go for net zero energy building. And here is a building in our campus that's just completed and will be open on 30th this month in order to drive the target. And the important elements, how we can achieve this is that we need to be able to provide good building envelope that will minimize the gain as well as to then supply with photovoltaics energy. The next challenge beyond green is wellness. And this comes back to the importance of caring for the occupants. So well and green is our next movement to try to advance the development. But we do need collaboration with the medical people, the public health people, and the social science people beyond just the architects and engineers in our industry. As an academic institution, we want to walk the talk. That's very important. Otherwise, we can convince our students. We tell them one thing and we do something else. So this mission of us in the university is really critical to educate the next generation of our professionals. Time is running out. The Burner Report talks about sustainable development as development that meets today's needs without compromising the future needs of the generation. And report after report and you've heard a lot in this conference, the urgency. And so that is the call that we need to go forward to do our best to push the frontier. Thank you very much.