"BUDAPEST, Hungary — An aerial photo taken months before a gigantic reservoir unleashed torrents of toxic sludge shows a faint red trail trickling through the container wall — part of a growing body of evidence that inspectors who gave the pit a clean bill of health may have missed warning signs."

"A set of proposed regulations to modernize safety in Pennsylvania's booming natural gas industry and force drillers to disclose the chemicals they use cleared a first procedural hurdle Tuesday."

"The Centers for Disease Control and Prevention have announced their first-ever direct grants to states and cities to study the potential effects of climate change in the United States."

"Tariq Yousafzai, a water and environmental engineer with detailed knowledge of his country's water infrastructure, sees evidence of climate change in the flood disaster that inundated one-fifth of his country. But a more immediate concern of his is the massive deforestation that has silted up the waterways and left Pakistan more vulnerable to storms than ever. "