Fifty percent of the world's population lives in cities. In a couple of decades, 70 percent of the world's population will be living in cities. Cities are where the problem is. Cities are where the solution is, where creativity exists to address the challenges and where they have most impact. This is why, in 2005, the C40 was founded, an organization of cities that address climate change. It started with 18 cities; now it's 91. Cities simply are the key to saving the planet.
The composition of our society has been changing. We [world] are becoming a more urban population. Mega-cities, those with more than 10 million residents, are booming.
Security is tantamount in the world of digital currencies, and rapid growth puts the security of the entire ecosystem at risk.
Our fifty principal cities contain 39.3 per cent of our entire German population, and 45.8 per cent of the Irish. Our ten larger cities only nine per cent of the entire population, but 23 per cent of the foreign.
It's a moral imperative, it's an economic imperative, and it is a security imperative. For we've seen how spikes in food prices can plunge millions into poverty, which, in turn, can spark riots that cost lives, and can lead to instability. And this danger will only grow if a surging global population isn't matched by surging food production. So reducing malnutrition and hunger around the world advances international peace and security - and that includes the national security of the United States.
Cities are important because that's where the majority of the world's population lives and an even bigger share of the global economy resides.
The combination of population growth and the growth in consumption is a danger that we are not prepared for and something we will need global co-operation on.
Nuclear disarmament and non-proliferation are not utopian ideals. They are critical to global peace and security.
As we deliver airplanes and we enable global travel and global cargo delivery, it provides overall economic growth around the world as well.
The United States is a world unto itself. We have mountains, we have deserts, we have a river that equals the Yangtze River, that equals the Nile. We have the greatest cities in the world - among the greatest cities in the world. We have a large population. We have challenges. We have an indigenous population.
The country that owns green, that dominates that industry, is going to have the most energy security, national security, economic security, competitive companies, healthy population and, most of all, global respect.
Actually, the phrase "national security" is barely used until the 1930s. And there's a reason. By then, the United States was beginning to become global. Before that the United States had been mostly a regional power - Britain was the biggest global power. After the Second World War, national security is everywhere, because we basically owned the world, so our security is threatened everywhere. Not just on our borders, but everywhere - so you have to have a thousand military bases around the world for "defense."
Growth, growth, growth -- that's all we've known . . . World automobile production is doubling every 10 years; human population growth is like nothing that has happened in all of geologic history. The world will only tolerate so many doublings of anything -- whether it's power plants or grasshoppers.
Issues relating to global health and sustainability must stay high on the agenda if we are to cope with an ageing and ever-increasing population, with growing pressure on resources, and with rising global temperatures. The risks and dangers need to be assessed and then confronted.
It's obvious that China faces a range of demographic and economic difficulties stemming from its own population growth, and that the global community has a vested interest in avoiding the worst impacts of that growth.
Economic growth must be the central issue because it is only through growth that the devastating threat of national bankruptcy can be averted. Furthermore, it is only by reviving American economic growth that the West's global predominance can be sustained, and peace and freedom kept secure around the world.