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Our sediment team scientists examine the benthic community condition throughout Puget Sound and look at changes over time.

Two new reports evaluate the influence of people, climate, and the Pacific Ocean on oxygen levels in South and Central Puget Sound, as well as the larger Salish Sea.

This is a story about a gracious landowner who was willing to work with us so we could better understand connections between the use of manure on land and nitrate in groundwater.

We are all familiar with the term acid and we often hear about the pH scale, but what does it really mean? It is a delicate dance at the molecular level. Let's break it down.

Soap isn’t the answer when there’s an oil spill.

Dirt Alert is a program to protect you and your family from arsenic and lead in soil.

The communities of small invertebrates, also known as benthos, living in the sand and mud at the bottom of Bellingham Bay are showing signs of stress.

The Washington King Tides Initiative needs your help documenting King Tides along Washington’s shores. Share your photos on washington.kingtides.net and the Flickr group.

Projects OK'd for the Yakima River Basin aren't idling with the onslaught of winter. In fact they've sprinted out of the gate and are picking up speed.

Two barges will pass through the locks and arrive in Lake Union in Seattle to get set to remove contaminated mud from Lake Union's bottom.