Kristin McCracken, 07/30/12

Editor, TribecaFilm.com

Few Americans are overly familiar with Ai Weiwei. With her engaging, intimate, and wholly personalizing portrait, Ai Weiwei: Never Sorry, director Alison Klayman hopes to right that wrong.

Matthew Hutson, 07/30/12

Science writer; author, 'The 7 Laws of Magical Thinking'

In general, if you're nice to people, good things come your way, but if you're jagoff, look out. These expectations make sense in social situations, where people can retaliate or return favors, and where reputation matters. But we expect the universe to play by the same rules -- to manifest karma.

Caleb Dembélé, 07/30/12

West Africa Acting Regional Representative, Trickle Up

By capitalizing on the universal appeal and excitement that sports can bring, people with disabilities in Mali were able to transform themselves from dependent and voiceless individuals into advocates for themselves and their communities.

Shira Lazar, 07/30/12

Co-Founder, WhatsTrending.com

While 18-year-old George Dennehy was born armless, he isn't letting that stop him from pursuing his dreams and sharing his passion with the world.

Molly Hahn, 07/30/12

Cartoonist, Children's Illustrator/Author

Marc Ozburn, 07/29/12

Founder and CEO, TheDoGooder.com

In 2011, Project peaceBOMB sold enough jewelry to clear the equivalent of 10,000 square meters of bomb-littered land.

Peter Yeo, 07/27/12

Vice President, UN Foundation

As over 10,000 of the world's greatest athletes convene in London for the 2012 Olympic Games, three stand out to me for their triumphs in rising from histories of war and conflict to represent their nations with pride.

Adrian Grenier and Peter Glatzer, 07/27/12

If necessity is the mother of invention, then it's no wonder the state of the environment is driving innovation around the world.

Gerald McSwiggan, 07/27/12

Senior Manager, Disaster Management, Business Civic Leadership Center

Like many people, I was shocked and saddened to hear about the shooting tragedy that happened last week in Colorado. But as often happens when tragedy strikes, the community, including the business community, came together in Aurora to help those affected by this terrible crime.

Lucy Danziger, 07/27/12

Editor-in-Chief, SELF magazine

When you watch the Olympics in the next 14 days and feel inspired, think about what it is that moves you. Then realize this: It doesn't really matter. Just get moving!

The Los Angeles Public Library, 07/27/12

Being a fictional character is no impediment to publishing cookbooks, just ask Betty Crocker. You can find cookbooks here from many of your favorite movies, books, and television shows.

Richard Attias, 07/27/12

Founder, The New York Forum

More than ever in 2012, the Olympic dream brings together people from around the world. Its positive values of hard work, fair play, excellence and team spirit foster a communion that transcends borders, cultures and ethnicity.

Willa Seldon and Melody Barnes, 07/26/12

Not so long ago, the Autumn Ridge apartment complex outside Memphis was a gang-controlled environment. Today, though, a safe, neat community has emerged.

Rob Spiro, 07/26/12

Co-founder, Good Eggs

The opportunity is not to invent a movement, but to build software to support one that already exists. By bringing meaningful technology to the thousands of local food entrepreneurs out there, we can accelerate the changes that they're already making.