sludge

Few things better represent life’s varied ephemeralities than being excited about fall foliage’s exploding colors, just before the leaves die and become the primary ingredient in wintry, brown sidewalk sludge.

Campaigners have previously complained that dredged sediment fills nearby rock pools with a "black, thick, slimy, petrochemically smelling sludge", which is toxic to people and the environment.

The scale of 374Water's current technology is small: it can handle just a fraction of the tonnes of wet sludge the facility produces daily.

Rescue operations are progressing at a slow pace as there is a large amount of sludge and debris covering the area.

These are chemicals used in construction to bind soil and prevent erosion, but if they escape into the water system, they can create sludge.