There's over a billion people on this planet that don't have access to clean drinking water.
The Moon is a ball of left-over debris from a cosmic collision that took place more than four billion years ago. A Mars-sized asteroid - one of the countless planetesimals that were frantically churning our solar system into existence - hit the infant Earth, bequeathing it a very large natural satellite.
AIDS and malaria and TB are national security issues. A worldwide program to get a start on dealing with these issues would cost about $25 billion... It's, what, a few months in Iraq.
If only 7 percent of the 2 billion Christians in the world would care for a single orphan in distress, there would effectively be no more orphans. If everybody would be willing to simply do something to care for one of these precious treasures, I think we would be amazed by just how much we could change the world.
It never ceases to amaze me that every second of every day, more than 6,000 billion neutrinos coming from nuclear reactions inside the sun whiz through my body, almost all of which will travel right through the earth without interruption.
And also, we are providing, you know, a nuclear power plant in the north, two light water systems, so some 4 or 5 billion dollars we are providing to meet with North Korean requests on the condition North Korea will not produce a nuclear weapon.
Man's inhumanity to man is as old as humanity itself. Some people just do evil things. Most do not. A billion people have seen 'Batman' movies over the past 20 years, and they have been entertained and inspired. One man saw it as a sick entry point for mass murder. The one is tragic. The billion are not. I choose to write for the billion.
I'm a technological optimist in that I do believe that technology will provide solutions that will allow the world in 2050 to support 9 billion people at an acceptable standard of living. But I'm a political pessimist in that I am concerned about whether the science will be appropriately applied.
At the end of my life, is it better to say that I empowered people to make great stuff, or that I died with a net worth of $10 billion? Obviously I'm picking the former, although I would not mind both.
In this financial year we will be spending at least $1.5 billion on foreign aid and we cannot be sure that this money will be properly spent, as corruption and mismanagement in many of the recipient countries are legend.