The Science of Sustainability

Tag: sediment

Dredging Up a Problem

Dredging Up a Problem

The Cuyahoga River in northeast Ohio — known for catching fire in the 1960s — relies on frequent dredging to keep the shipping channels open. Now a controversial new proposal to dump the dredged material into Lake Erie has residents worried about contamination of the public water supply.

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A River Returns

A River Returns

In Washington state, a river once known for its abundant salmon run is getting a second chance. The Elwha River dams, which decimated salmon populations and profoundly altered the ecosystem, are coming down and hopes are high that salmon will return.

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A New Radiocarbon Yardstick from Japan

A New Radiocarbon Yardstick from Japan

A long core of sediment from a Japanese lake is a Rosetta Stone for ice-age climate research.

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San Francisco Bay Slowly Recovering From Gold Rush Miners' Devastating Legacy

San Francisco Bay Slowly Recovering From Gold Rush Miners' Devastating Legacy

USGS geologists are finding that Gold Rush-induced sediment levels in the San Francisco bay might be diminishing.

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Sand Waves and the Golden Gate

Sand Waves and the Golden Gate

Mapping of the underwater topography (called bathymetry) reveals landscapes fundamental to understanding the Bay Area's unique geology. The Golden Gate strait connects the San Francisco Bay to the open Pacific Ocean and is only one mile across.

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The Changing Bay: Wetland Restoration Projects in Northern California

The Changing Bay: Wetland Restoration Projects in Northern California

Wetlands — they are possibly the most diverse ecosystems on the plant, according to environmental scientists.

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Reporter's Notes: The Changing Bay

Reporter's Notes: The Changing Bay

Less sediment in the bay means there's less for the wetlands, which could be an issue. But there's one thing that makes it worse: sea level rise.

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Medicine from the Ocean Floor

Medicine from the Ocean Floor

Ever thought about using medicine from the ocean floor? Well, scientists are using robots to sort through millions of marine chemicals in hopes of finding a cure to all kinds of diseases from cholera to breast cancer. Amy Standen has more.

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