World Sep 01 A Chinese mining company is accused of covering up the extent of a major toxic spill in Zambia By Jacob Zimba, Gerald Imray, Associated Press
Nation Aug 17 Watch 6:13 Toxic spill causes hardship for the Navajo farmers and ranchers downstream It's been nearly two weeks since an EPA accident at a defunct Colorado mine fouled rivers in multiple states, and among the hardest hit residents are the Navajos. Special correspondent Kathleen McCleery reports from New Mexico. By PBS News Hour