Now, Dr. . John Leuke on assignment for 60 Minutes. Biologist Charles Darwin began crafting his theory of evolution on a trip to the Gapagos Islands, where he discovered animals had developed unique traits that varied from island to island.Nearly two centuries later, on a different island, scientists aren't just observing evolution. They now have the technology to shape it. This past year, we met a team of modern-day Darwins on Nantucket, where they're hoping to use genetic engineering to reduce the transmi ...

The natural disaster in our area is not hurricanes or tornadoes or earthquakes. It is Lyme disease. Genetic engineers believe they found a way to slow the spread of the debilitating disease carried by ticks.It is amazing to see this. A look at something that's never been attempted. Genetically engineering wild mice to prevent people from getting sick.Do you worry about fooling around with mother nature. ...