Neighbors in Northwest D.C. say a mysterious substance was dumped into Rock Creek and posted video. Authorities have not publicly identified the material yet.

A harbor seal was seen on a Mosquito Lagoon sandbar south of Ponce Inlet; Hubbs‑SeaWorld responders photographed it before it swam off. Officials ask the public to report sightings.

El Paso County will hold a March 24 community meeting to review survey results and new renderings for Ascarate Park. Officials will present visuals and gather feedback before design advances.

A troop of rhesus macaques at Silver Springs State Park offers dramatic wildlife sightings while prompting safety warnings and renewed questions about management.

Seattle's Waterfront Park logged nearly 8.4 million visits in 2025, a milestone for the city's rebuilt central waterfront and its local economy.

Demolition crews have started removing the Woodson Pool as the city prepares to build a MAPS 4 youth center at Woodson Park. The facility will be run by the Boys & Girls Clubs.

A contractor struck a low-pressure sewer line on March 12 and about 100 gallons of wastewater reached Lake Norman near Cornelius. Charlotte Water contained the leak and urged residents to report signs of contamination.

A mountain lion was seen Tuesday in Rohnert Park's G section. Police say there is no immediate threat while wildlife officials offer safety guidance.

A five‑pillar report urges binational fixes — from plant repairs and steady operations funding to reuse and real‑time monitoring — to end chronic Tijuana River pollution. Authors say the plan pairs emergency fixes with long‑term governance and monitoring to cut beach closures and health harms.

Bright-blue Glaucus atlanticus sea slugs have washed ashore near Corpus Christi. Researchers warn their sting can be intense and advise photo‑not‑touch.

Smyrna is seeking public input on a proposed $6 million renovation of Rotary Soccer Park as it pursues a TDEC grant; a public meeting is set for March 17.

A viewer-submitted video shows a cougar wandering through a Woodinville neighborhood; wildlife officials urge residents to secure pets and report sightings.

Santa Monica and The Bay Foundation launched Phase III of the Beach Dunes project, adding nearly 30 acres of restored dunes from the Pier toward Venice. The living-shoreline work aims to slow erosion, expand habitat and keep beach access open.