(CNN) -- It tastes like a tomato, smells like a tomato, and even looks (mostly) like a tomato. There's just one catch: It's purple. The USDA has approved a genetically modified purple tomato, clearing ...

As home gardeners in the U.S. page through seed catalogs and pick out their favorite heirlooms, there's a new seed that has never been available to them before: a tomato the color of a concord grape ...

Everyone always repeats that "good things come to those who wait" line, but they don't always add that sometimes the waiting can stretch on for ages. In biochemist Cathie Martin's case, it took almost ...