Coastal regions face a growing peril hidden beneath their surfaces — saltwater intrusion. Over 2.5 billion people rely on aquifers (natural underground water reservoirs) for fresh water ...

In estuaries—the transitional zones between rivers and the sea—fresh and salt water are constantly battling for dominance. But due to climate change, the saltwater is gaining ground. New research by ...

Everglades restoration has improved Florida's drinking water, but rising sea levels and saltwater intrusion now pose new threats.​ ...

Saltwater intrusion also occurs when wells draw down aquifers to provide water for ... and causing harmful algal blooms to form in coastal waters. Scientists have learned that marsh plants need ...