Introduction -- Helping kids make a difference : Talia Leman -- Connecting street kids with help : Jeroo Billimoria -- Teachers for all : Wendy Kopp -- Medicine for the masses : Ting Shih -- Saving premature newborns : Jane Chen -- Empowering people with special needs : Nadia Hamilton -- Dressed for success : Nancy Lublin and Lisa Doromal -- Enabling women to help themselves : Elizabeth Stott -- Tackling poverty : Jane Addams -- Suppers for seniors--delivered : Doris Taylor -- The world's most ridiculous problem : Komal Ahmad -- The tree-planting plan : Wangari Maathai -- Rebuilding underprivileged communities--the eco-friendly way : Radwa Rostom -- Making solar energy affordable : Lesley Marincola -- Inspiring girls to succeed in tech : Tara Chklovski -- Saving the world one solution at a time : your turn.