7. Narayanan KrishnanA chef turned social worker who declined a lucrative job in Switzerland to serve his nation.
One day he saw a poor man eating human waste for food.
This hurt him so much that he left his job and found an NGO named Akshaya Trust in 2003 which serves more than 1.2 million meals for the destitutes.
He carries a comb, scissors and razor and is trained in eight haircut styles that, along with a fresh shave, provide extra dignity to those he serves.
He won CNN Heroes Award out of 100 countries and 10,000 entries, selected in top 2 of the World.