Mario R. Capecchi, Oliver Smithies and Martin J. Evans helped develop a technique to manipulate genes in mice.

  DNA analysis may help solve a long-running dispute between those who would claim alternative bragging rights to Christopher Columbus.

  A federal study could reveal whether pollution caused a cluster of cases of Lou Gehrig?s disease centered on a downtown industrial area in Middleborough, Mass.

  The red one is cute. The gray one is taking over. England is going nuts.

  Senator Hillary Rodham Clinton?s remarks Thursday amounted to a spirited attack on President Bush for waging what she called a ?war on science.?

  As the first bush fires of the year rage through Australia?s national forests, concern over climate change and its effects is intensifying.

  For star-struck Americans, a new kind of home theater.

  A collector of space memorabilia plans to follow his father?s footsteps into space.

  Hany Farid, a 41-year-old engineer, is a founder of a subdiscipline within computer science: digital forensics.

  Brazil is today the world?s top exporter of soybeans and beef. How has it become an agricultural superpower?

  Researchers investigating if the way you fight with your spouse can affect your health. From this week?s Science Times.

  A discovery suggests that a prehistoric division of the world may not have been quite so clear-cut.

  Doctors who write about medicine tend to dwell on the big themes: life, death, suffering, hope and the rest. Dr. Vincent Lam also looks into the life of the modern immigrant doctor.

  Scientists are concerned by this summer?s massive polar ice melt and its implications for the future.