Some observers say race may have played a role in the shooting of 17-year-old African-American Trayvon Martin. The shooter says it was self defense, but Martin's family says the boy was unarmed and are demanding Florida authorities press charges. Host Michel Martin speaks with Miami Herald reporter Frances Robles.
Natasha Balac runs a two-day boot camp out of the San Diego Supercomputer Center for people from all types of industries to learn the tools and algorithms to help them analyze data and spot patterns in their work.
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