TITUSVILLE, Florida (Reuters) - The end of the U.S. space shuttle program is the end of the line for Tom Brown and other workers like him at the Kennedy Space Center in central Florida. He is about to join the ranks of the unemployed. "It's kind of scary," said Brown, a 60-year-old contractor and structural steel painter who has worked on the shuttle program for the last 26 years.

Analysis: Summer to test Japan resolve over nuclear power

TOKYO (Reuters) - Two months of baking heat will test Japan's resolve to wean itself off nuclear power and show whether an energy-saving drive set off by meltdowns at the Fukushima plant will bring lasting efficiency gains the way the 1970s oil crisis did. There are some signs that there is no going back to the pre-March 11 status quo as businesses and consumers change behavior in ways that will last beyond the summer electricity crunch.

Experts find rogue stem cells in liver cancer

HONG KONG (Reuters) - Liver cancers are embedded with a type of super cancer stem cells that make them resistant to chemotherapy, spread to other body parts and stage a comeback even after they are surgically removed, researchers in Hong Kong reported on Thursday. The discovery, published this week in the journal Cell Stem Cell, is important because it means experts can target these stem cells in their fight against liver cancer, a major blight in China and southeast Asia.