Neuroplasticity research showed that the brain changes its very structure with each different activity it performs, perfecting its circuits so it is better suited to the task at hand.

Each one of us has the power to be the change we want to see in the world, making the world a better place.

Because I was poor I had one special advantage. When you are poor, and basic survival is your concern, you have no alternative but to be an entrepreneur. You must take action to survive just as you must take action to seize an opportunity.

I believe we need a more opportunistic and democratic approach to lunar exploration, now that we're shifting from U.S. government-sponsored space exploration to private expeditions.

Athletes at all ages are bigger and stronger than ever before. And they are being encouraged - sometimes even incentivized, as we recently learned was the case on at least one National Football League team - to play to injure.

Just as physical exercise is a well-known and well-accepted means to improve health for anyone, regardless of age or background, so can the brain be put 'into shape' for optimal learning.

There are as many ways to help another human being as there are people in need of help. For some, the urgent need is as basic as food and water. For others, it is an opportunity to develop a talent, realize an idea, and reach one's full potential.