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Can babies born today really live to be 150 years old? Author Sonia Arrison believes so. Arrison speaks to Jeff Glor about her new book, "100 Plus," that explores the science behind increasing lifespan

For more than 150 years, spark plugs have powered internal combustion engines. Automakers are now one step closer to being able to replace this long-standing technology with laser igniters, which will enable cleaner, more efficient, and more economical vehicles.