Thousands of refugees and asylum seekers attempt the hazardous trip through Egypt's Sinai trying to reach Israel. About a third die in the attempt and many are held for ransom. Hamdy al-Azazy helps as many as he can.
Pastor Corey Brooks spent nearly three months on the roof of run-down Chicago motel that was a hub of drug dealing and prostitution to shut it down.
Germany's Irmela Mensah-Schramm checks lampposts, public benches, anywhere she might find a racist slogan or Nazi swastika. Then she pulls out a bottle of spray paint and covers it.
Epps, the principal of Synergy Charter Academy in Los Angeles, has turned it into the 'best urban elementary school in the US.'