Birds along the coastline were covered in oil, but environmentalists say there may be additional damage to marine life that's harder to see.
After the BP oil spill in 2010, a new federal oversight agency was created: the Bureau of Safety and Environmental Enforcement. Now, according to the Wall Street Journal, it’s proposing to roll back some of the safety rules it created. Click the audio player above to hear the full story.
A geologist says mangroves remain soaked in oil from a 2008 pipeline spill.
Alabama has used most of a recent settlement to help fund Medicaid and pay off debt.
In November, the worst mining disaster in Brazil's history killed 17 people.
It was a dramatic disaster to call attention to environmental risks, and 25 years later it stands out as an stark reminder of continuing environmental risks.