Health & Safety

Bacterial Competition In Lab Shows Evolution Never Stops

Day after day, workers at Michigan State University care for and feed colonies of evolving bacteria. The original microbes have produced more than 50,000 generations in the 25 years since the experiment began. Despite predictions the bacteria might someday reach a point where they would evolve no more, the results show they keep changing.

Health Care Registration Numbers Are Revealed

The Obama administration says just about 100,000 people managed to choose health plans through the federal and state health exchanges during their first month of the program. Critics say that shows the law is failing. But most analysts say the first month's numbers wouldn't have meant very much, even if the federal website had been working properly.