The World's Jason Margolis reports on the North American summit near Ottawa today. President Bush met with Canada's prime minister Stephen Harper and Mexico's president Felipe Calderon. Mexico's president had to leave early to survey the damage from Hurricane Dean back home.

Franc Contreras reports that Hurricane Dean hit Mexico's Yucatan peninsula as a Category 5 storm but has since weakened in strength. The storm could strengthen again over the Gulf of Mexico and come ashore again in central Mexico sometime tomorrow.

Haleh Esfandiari, the Iranian-American academic who spent the past three months in a Tehran prison was released on bail today. She was visiting her mother late last year when authorities took her into custody and charged her with acting against national security. Anchor Lisa Mullins speaks with her husband, Shaul Bakhash, about the ordeal.

New Zealanders developed a love affair with reggae after Bob Marley played his one and only concert there in 1979. The World's Marco Werman has today's global hit.

Today's answer is Oulu in Finland. It's the site of an archeological dig that recently yielded a rare find some 5,000 year old chewing gum. Anchor Lisa Mullins gets details from Sarah Pickin, the British university student who discovered the gum.

Where in the world will we go today?

Afghans are building roads, schools, the economy , and their bodies. Reporter Oliver Broudy reveals in the August issue of "Men's Health" that 80 gyms have opened in the capital, Kabul, in the past six years. He speaks with anchor Lisa Mullins.

Reporter Dorian Jones examines the rise of political Islam in Turkey's traditionally secular Kurdish population.

There's an effort afoot to preserve the diversity of the world's crops by collecting seeds. Those seeds will go into the Svalbard Global Seed Vault now being built in Norway, above the Arctic Circle. Anchor Lisa Mullins finds out more about the project from Cary Fowler, executive director of the Global Crop Diversity Trust.