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The implications of a Nawaz Sharif victory in Pakistan. Sectarian violence continues in Burma. And a look back at May 14, 1796 when Edward Jenner began performing vaccinations against smallpox.

Also: Yahoo makes teen a millionaire, Onion ridicules Syria's president and an NFL player may come out.

On Tuesday's show: The global community's increasing concern over the possible creation of chemical weapons in Syria and a look into the quest for peace in Colombia.

The U.N. said 200,000 Syrians have fled the embattled city of Aleppo since intense clashes between regime forces and rebels began ten days ago.

Thursday on Worldview: Dr. Zaher Salhoul talks about his group’s efforts to treat the wounded inside Syria and in the refugee camps in Turkey and Jordan; the Rainforest Rescue Coalition describes their mission to conserve and protect rainforest land around the world.

Film contributor Milos Stehlik talks with Lebanese director Nadine Labaki about her new film, which opens in Chicago May 18. We also hear from documentary maker Jason Glaser. After watching his friends in western Nicaragua die from kidney failure, he put his camera aside and started a foundation to help them.

A UN-brokered cease-fire in Syria, in place since April 12, has had little effect on stemming the violence that has raged for more than a year now. Yesterday, three members of the Syrian security service were killed in Damascus.