The cause of the March 29 failure of the Russian Ekspress AM11 communications satellite has been confirmed as a collision with space trash, a Russian official told the state Novosti new agency Monday.
For decades the study of fish bones was considered one of the most esoteric branches of archaeology, but now it is helping to reveal the massive significance of the fishing trade in the Middle Ages.
New York's transit agency plans to postpone demolition of a building near the World Trade Center site because of possible contamination with toxic dust.
Michigan Gov. Jennifer Granholm has announced plans to reduce mercury emissions from coal-fired power plants by 90 percent in the next decade.