At the site known today as the La Brea Tar Pits and Museum, natural asphalt has bubbled up from below the ground’s surface since the Ice Age. This murky sludge has trapped and made fossils out ...

East of Houston’s city limits, a battered Interstate 10 bridge soars over a narrow point in the San Jacinto River, slicing across the peninsula that houses two waste pits where toxic sludge was ...

We also use binomial logistic regression to determine if contextual factors can be used to predict the intentions of rural Cambodian latrine owners when pits fill. We found that four in ten rural ...

Chemicals found in sewage sludge that some farmers use to fertilize fields and pastures can pose a threat to human and animal health, the US Environmental Protection Agency said Tuesday.