...describing a social problem. Often in depression cases, experts believe, a social problem eventually triggers a chemical problem, an imbalance in the brain. Many years ago, as Cadmus sought to make sense of alcoholic parents who kept him up...

...recently acknowledged that a facility built to treat the bulk of the tank waste must be modified or replaced because of chemical problems, a process that could take years and potentially delay the high-level waste program. Overall, though, the cleanup...

...it right -- and then when I almost got it finished, right in the middle I had to put it on the shelf and get my chemical problem together once and for all. And now, I'm good and sober. I go to the gym on Monday, Wednesday, Friday. I have...

...but the discovery of four dead animals in virtually the same spot led to speculation that the waterway could have chemical problems. Mr. Hammond-Beyer, who teaches advanced placement environmental biology and upper-level physics at Lucy C...

...he said. The squad, which covers 15 counties, also recovers ammunition and assists in potentially dangerous chemical problems, such as cleaning methamphetamine labs. In addition to training, bomb squad applicants must undergo an FBI background...

...to be treated there. But in January, Westinghouse notified the Department of Energy it was unable to resolve a chemical problem that had long plagued the system. That was 15 years after work began, and years after some critics first voiced...