New Gene Editing Tools May Speed Creation of Bigger Harvests

Feeding the world depends on bountiful harvests, even in the face of changing pests and climate. Scientists are bringing a new tool to the effort, a bacterial gene editing system called CRISPR. The technique works like a molecular pair of scissors that targets a specific location in the DNA to introduce beneficial traits, or delete harmful ones. From Berkeley, California, Shelley Schlender reports.