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Airs Saturday, January 22, 2011 at 2 p.m. on KPBS TV

Packed with nutrients, easy to grow and adaptable to local cuisines, this tropical superfood could bring more food and cash to poor farmers around the world.

About 90 first-graders sat on the carpeted floor of an assembly room at Logan Elementary School when a stage curtain was drawn, showing them a gift of bikes.

The Environmental Health Coalition is working with the Port of San Diego to clean up the air at port docks. Exhaust from diesel trucks and cruise ships spew toxic air in nearby neighborhoods. KPBS Env

Photographer Christopher Boffoli made his name with his amusing dioramas of tiny, plastic people literally dominated by food. A new book, Big Appetites, assembles more than 200 images of these tiny people and their "complex culture."

A broad coalition of Evangelical groups sent letters to President Barack Obama and congressional leaders asking them to pass immigration reform.

Mayor Bob Filner said today his hopes to land a cross-border Olympics for San Diego and Tijuana were "undaunted'' by word from the International Olympic Committee that rules may preclude a joint bid by the U.S. and Mexico.

As the conflict in Syria continues, the international community is preparing for the possible fall of President Bashar Assad's regime. Last week, President Barack Obama formally recognized a Syrian opposition group as the country's legitimate representative.

In his campaign, Prime Minister Justin Trudeau promised to launch an investigation into the disappearances of more than 1,000 Native women. Families and advocates have been waiting for years.

Nonprofit holds campouts for children who've lost parents in the military