Why do we turn to nonprofits, NGOs and governments to solve society's biggest problems? Michael Porter admits he's biased, as a business school professor, but he wants you to hear his case for letting business try to solve massive problems like climate change and access to water. Why? Because when business solves a problem, it makes a profit -- which lets that solution grow. TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design -- plus science, business, global issues, the arts and much more.

Reduction of poverty, liberation, freedom: all of these words have been used to define international development, but no definition is set in stone. Global development expert and TED Fellow Alanna Shaikh breaks it down for us: It is about providing aid, while understanding that the developing world actually subsidizes the developed world. In this talk she points a light at corruption in an effort towards a more just world.