Ban Ki-moon

In 2009, at the height of the global economic crisis, it was clear that we were seeing something new: the impacts of the crisis were flowing across borders at unprecedented velocity.

The explosion in access to mobile phones and digital services means that people everywhere are contributing vast amounts of information to the global knowledge warehouse. Moreover, they are doing so for free, just by communicating, buying and selling goods and going about their daily lives.

Pacific Islands are among those that contribute least to global warming, yet suffer most.

The possibility that terrorist groups could obtain weapons of mass destruction should not be dismissed as a fiction. This is a horrific threat the international community should take seriously. As long as these weapons exist, so, too, does the risk of their use - by accident or design.

The true measure of success for the U.N. is not how much we promise, but how much we deliver for those who need us most.

Schools connect children to their communities. Jobs connect adults to their societies. Persons with autism deserve to walk the same path.

One of my earliest memories is walking up a muddy road into the mountains. It was raining. Behind me, my village was burning. When there was school, it was under a tree. Then the United Nations came. They fed me, my family, my community.

Women hold up more than half the sky and represent much of the world's unrealized potential. They are the educators. They raise the children. They hold families together and increasingly drive economies. They are natural leaders. We need their full engagement... in government, business and civil society.

Saving our planet, lifting people out of poverty, advancing economic growth... these are one and the same fight. We must connect the dots between climate change, water scarcity, energy shortages, global health, food security and women's empowerment. Solutions to one problem must be solutions for all.

Climate change, in some regions, has aggravated conflict over scarce land, and could well trigger large-scale migration in the decades ahead. And rising sea levels put at risk the very survival of all small island states. These and other implications for peace and security have implications for the United Nations itself.

Climate change does not respect border; it does not respect who you are - rich and poor, small and big. Therefore, this is what we call 'global challenges,' which require global solidarity.

The clear and present danger of climate change means we cannot burn our way to prosperity. We already rely too heavily on fossil fuels. We need to find a new, sustainable path to the future we want. We need a clean industrial revolution.