For too many troops, physical combat on the battlefield turns into a psychological battle as they struggle to transition back into a turbulent American society.

Tunnel vision. It's a term that we throw around to express either how focused we are on a project or when a person only sees something from their point of view. Meet Jamellia, who has a condition called retinitis pigmentosa, which causes her to experience tunnel vision.

As the London Olympics closed, a new race began -- the race to tackle malnutrition. It is a race we must win.

The Olympic vision to reach higher and faster could become a reality for many more children around the world following Sunday's hunger summit.

South Africa is one of a handful of countries that is capable of providing enough food for its people. Despite this, over 11 million South Africans are "food insecure," and nearly a billion people worldwide are hungry or malnourished.

Javier, for one, only thinks about swimming. He goes to school. He is a good student in his seventh grade class. But, he can't wait to head to the pool as soon as the bell rings. His dream is to become a swimming instructor -- after winning an Olympic medal, of course.

As we celebrate the best in humanity this Olympics, that means giving others the chance to live their dreams. Sports brought us together for London 2012. The action we take next is up to all of us.

One of the first companies to really leverage the power of the internet to connect those who have with those who need, Kiva allows anyone to lend money to aspiring entrepreneurs in developing countries in a relatively risk-free way.

As the world watches athletes from 205 countries compete in London this month, we should be reminded of the potential of sports to help youth accomplish feats that won't land them on a podium -- but are arguably more valuable than an Olympic medal.

Among the most effective tools in the girls' leadership tool box, believe it or not, is a ball. Put a girl who has never played soccer or volleyball before -- or never been allowed to play before -- onto a field or court, and she'll exercise more than just her arms and legs.

If Oscar Pistorius doesn't have an advantage in his races, then we in the world of orthopedic rehabilitation aren't doing our job.

In almost every way, CrossFit has turned the conventional wisdom of fitness on its head. This is largely because the big picture in CrossFit is overall well-being, achieved through nutrition and fitness, coupled with a philosophy of incremental improvement and sense of community.

When Lei Htoo kicks the ball his long silky dark hair whips up into his face. Lei Htoo was resettled in El Cajon with his mother and siblings from a refugee camp on the Thai/Burma border.

Wearing his #10 jersey, Heemo is glued to the TV screen watching the Olympics soccer matches. The refugee camp boundaries may confine him physically, but soccer lets him see beyond the end zone to his next goal.

Newton Running, like serious athletes in any sport, comes with a deep understanding of what it takes to get to the finish line. There are no shortcuts or silver bullets. You need to train hard, build skills, persevere and always keep the end goal in sight.

There has never been a more strategic time to join my team as we reach out to the children of South Sudan. Take this baton of responsibility and together we can break records and change lives!

Vin Scully is much more than the one of the greatest sportscasters ever: he is an artist who has distinguished himself with his poetic use of language, his gracious and dignified demeanor and his dramatic calls of some of the greatest moments in baseball history.

I hope the world changes the way we view our limitations and how we see people with disabilities, particularly children.

A major philosophy behind the Olympic movement is that "it is not the winning, but the taking part that counts". In sending out messages to be more physically active we do well to remember this sentiment.

We let customers reduce their commitments to us to right size their infrastructure with their changing business conditions. It was a tough decision, but it was a great investment in our customers. It paid off for us then -- and it continues to work in today's choppy economy.

Samsam and Mohamed's is an Olympic story most people won't get to hear. They may not even get the chance to compete in London. But, for me, their story is the most inspiring at this summer's Olympics.

In the presence of others, I couldn't stand the thought of opening the contents given the devastating possibility that the information inside might be a rejection notice. You cannot imagine my heart's cry when I was told, "Congratulations, Lopez. You are going to America!"

Although Scott England spends much of his year touring the US with his band members, he travels frequently to countries Latin America and Africa, pitching in on building or medical missions and offering his talents in song with his trusty acoustic guitar.