burgers

Most people don't think too much about bovine hurt when they chow down on a Big Mac or Whopper. But for those with moral pangs, scientists say genetic engineering might provide a solution, by creating pain-free animals that can satiate the human appetite without suffering.

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If the biotech industry has its way, ordering a hamburger might soon sound something like this: one charbroiled cloned-beef patty, with genetically modified cheese, lab-grown bacon and vitamin-C-fortified lettuce, on a protein-spiked bun. The burger of the future is delicious, nutritious and contains more engineering than a stealth bomber.

In January, the