Lab and field experiments indicate that aquatic environments could act as reservoirs for the pathogens, which typically do not represent a direct risk to humans.

As the salty Atlantic Ocean pushes farther inland, forests are turning to marsh. Some scientists want to speed the transition.

The repeal will return the US to water standards from 1986.

Environmental groups are concerned and plan litigation.

Conservationists and the insurance industry team up to model the economic benefits of marshes during hurricanes.