Ramirez is an entrepreneur. Her startup, Plus Ultra, has been on a mission since 2012 to raise awareness about another throwaway plastic item -- toothbrushes -- and replace them with toothbrushes made from bamboo. Christina Ramirez wants to reduce plastic waste. She launched Plus Ultra while working as a Whole Foods team member in Venice Beach, California. But the idea for it had been percolating in her mind for even longer, going back to a college paper she wrote as a global studies major at University of California, Santa Barbara.