About half my work in education is U.S. political reform around school districts and charter schools and creating more room for entrepreneurial organizations to develop. And about half on technology which I look at as a global platform.

To compete in a global economy our students must continue their education beyond high school. To make this expectation a reality we must give students the tools they need to succeed including the opportunity to take a college entrance exam.

Google is a global Rorschach test. We see in it what we want to see. Google has built an infrastructure that makes a lot of dreams closer to reality.

Through all aspects of society be it art design the financial markets government technology or communications we are witnessing unprecedented global transformation - the result of which is impossible to predict.

It's funny now how much we look at - whatever you want to call it: art design culture stuff film - online and how in the online world you're instantly global.

To be clear climate change is a true 800 pound gorilla in the room. The effects of global warming threaten global environmental upheaval over the coming century. But for South Florida and the Everglades it could be our death knell if urgent action is not taken.

We worry about the seemingly ever-increasing number of natural catastrophes. Yet this is mainly a consequence of CNN - we see many more but the number is roughly constant and we manage to deal much better with them over time. Globally the death rate from catastrophes has dropped about fifty-fold over the past century.

The right response to the non-problem of global warming is to have the courage to do nothing.

We know the threats - from global terrorist networks to the spread of deadly weapons. Yet we also know that embedded in this time of danger is the promise of a new day if we have the courage and commitment to work together.

I think Al Gore has done a great service in making global warming cool. He's basically taken it from a nerdy almost ignored issue to making it what it is - namely a problem.

And we have a little herb garden which survived the winter thanks to global warming. It makes me feel like a cool old Italian housewife that I kept my rosemary alive outside all winter.

Globalization as defined by rich people like us is a very nice thing... you are talking about the Internet you are talking about cell phones you are talking about computers. This doesn't affect two-thirds of the people of the world.

Yet in this global economy no jobs are safe. High-speed Internet connections and low-cost skilled labor overseas are an explosive combination.

It is vital that the United States maintains open lines of communication with our allies. We must assure them of our commitment to eradicating global terrorism wherever it may reside or wherever it's given haven.

Climate change is a global issue - from the point of view of the Earth's climate a molecule of CO2 emitted in Bejing is the same as a molecule emitted in Sydney.

Geoengineering - the deliberate large-scale manipulation of the earth's climate to offset global warming - is a nightmare fix for climate change.

If left unchecked global change will create violent conflict torrential storms shrinking coastlines and irreversible catastrophe.

Bill Gates is a relative newcomer to the fight against global warming but he's already shifting the debate over climate change.

Some people call it global warming some people call it climate change. What is the difference?

All cities do face similar significant trends in the future... most importantly global warming and climate change.

Climate change was a point of division between Obama and Republican rival Mitt Romney. The president declared climate change a global threat acknowledged that the actions of humanity were deepening the crisis and pledged to do something about it if elected.

In order to effect great change we need to look at how we can help those in our own communities as well as globally.

We first fought... in the name of religion then Communism and now in the name of drugs and terrorism. Our excuses for global domination always change.

Often times when you face such an overwhelming challenge as global climate change it can be somewhat daunting - it's kind of like trying to lose weight which I know something about.