Susan notes: Thanks to TED for making TED Talks downloadable and embeddable, and for providing the biographical information that goes along with them.

Natalie Jeremijenko's unusual lab puts art to work, and addresses environmental woes by combining engineering know-how with public art and a team of volunteers. These real-life experiments include: Walking tadpoles, texting "fish," planting fire-hydrant gardens and more.

Natalie Jeremijenko blends art, engineering, environmentalism, biochemistry and more to create real-life experiments that enable social change.

Bridging the technical and art worlds, Natalie Jeremijenko creates socially conscious experiences that make change, both directly and indirectly.

As director of the xDesign Environmental Health Clinic at NYU, she helps prescribe creative health solutions for the environment that are carried out by enthusiastic volunteers.

Susan notes: Thanks to TED for making TED Talks downloadable and embeddable, and for providing the biographical information that goes along with them.

What do you think of people in poverty? Maybe what Jessica Jackley once did: "they" need "our" help, in the form of a few coins in a jar.

The co-founder of Kiva.org talks about how her attitude changed -- and how her work with microloans has brought new power to people who live on a few dollars a day.

Jessica Jackley is the co-founder of Kiva.org, an online community that helps individuals loan small amounts of money, called microloans, to entrepreneurs throughout the world.

Seven years ago, Jessica Jackley heard a speech by Grameen Bank founder Muhammad Yunus, an economist from Bangladesh who had developed the idea of microcredit: loans offered to entrepreneurs too poor to qualify for traditional bank loans.

Susan notes: Thanks to TED for making TED Talks downloadable and embeddable, and for providing the biographical information that goes along with them.

Dr. Zahn joined the Centre for Addiction and Mental Health (CAMH) as President and Chief Executive Officer in December, 2009.

Prior to this appointment, she was Executive Vice President, Clinical Programs and Practice, at the University Health Network.

An honours graduate of the Faculty of Medicine at the University of Toronto (U of T), she is a Fellow of the Royal College of Physicians and Surgeons of Canada (Neurology) and a Professor in the U of T Faculty of Medicine.

Susan notes: Thanks to TED for making TED Talks downloadable and embeddable, and for providing the biographical information that goes along with them.

School fundraising…helping to select a new principal…winning awards…these would be impressive accomplishments standing alone, but at age ten, Encinita Elementary fifth grader Madison Razo has done it all.

Much of it is due to a love for writing–Madison has won several essay contests, including a recent award (sponsored by Panda Express) for her essay written on the Seven Habits of Happy Kids by Sean Covey.

Susan notes: Thanks to TED for making TED Talks downloadable and embeddable, and for providing the biographical information that goes along with them.

Something too many students go through, where yet few speak up, bullying is an issue which continues to challenge.

In eighth grade, Brigitte Berman decided to do something. After writing Dorie Witt’s Guide to Surviving Bullies, she spent a year touring to speak about bullying.

Though Brigitte has been featured in media nationally and internationally (CNN Headline News, Good Morning America, ABC Radio Australia, and Voice of America, to name a few), Brigitte’s campaign against bullying extends beyond TV screens; she testified at the Massachusetts State House in support of bullying legislation.