Offering an online education from MIT and Harvard to all. Pushing for disability rights around the globe. Using Twitter to achieve social good. With these deeds and others, a dozen folks are making their mark. View their stories:

> ANANT AGARWAL: Offering an online education from MIT and Harvard to all

Continue reading below

> SONIA CHOKSHI: Using social media for much more than gossip

> PAULA HAMMOND: Finding big potential in molecules

>DR. DAVID HERZOG: Blazing trails to improve women’s body images

>LINDA MASON: Bringing hope in the wake of disaster

> DEBBIE NATHAN: Using art to bring together Israeli and Palestinian teens

> DEBORAH O’HARA-RUSCKOWSKI: Coming to the aid of nurses in Haiti

> TRACY PALANDJIAN: Helping investors do well and do good

> CARLOS RODRIGUES: Making overseas orphanages and schools safer, one nail at a time

> GLEN SHOR: Working to prove universal health care can succeed

> MICHAEL ASHLEY STEIN: Striving for disability rights around the globe

>TED WELLS: Teaching kids to agitate for the planet

Send comments to magazine@globe.com.