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Toll Brothers Inc. will pay a civil penalty of $741,000 to resolve alleged Clean Water Act violations at its construction sites, including sites located in the Chesapeake Bay Watershed.

The EPA Chesapeake Bay Program is reporting that dissolved oxygen levels in the Chesapeake Bay dropped last year to their lowest levels in four years, with 66 percent of the estuary failing to meet water quality standards for oxygen in the hot summer months.

The carbon dioxide we release is absorbed by the Earth's oceans. But it doesn't just benignly vanish. It's eventually released into the water, making the water more acidic. That's feeding algae blooms and killing some animals. In the Puget Sound, the situation is even worse.

Swimmers have been warned not to go in the water in part of Devon following the development of an algal bloom.

BAINBRIDGE ISLAND — Algae blooms that changed water off several Bainbridge shorelines bright red this week pose no risk to humans or shellfish, according to Kitsap County Public Health District officials.

A torrent of sunshine and temperatures in the ’70s have spurred marine algae blooms across the Puget Sound, including Sinclair Inlet.The Washington Depart of Ecology has noticed a number of blooms, the visible appearance of millions of tiny plant-like organisms in the water, in Sinclair Inlet. The blooms often appear as brown or green sludge at or near the surface of the water.

As we kick off the summer season, hundreds of thousands of people will be visiting the Jersey Shore to enjoy our beautiful beaches. Gov. Christie’s policies, however, are undermining the protections of our coastline.

NASA scientists discover 100 km stretch of phytoplankton under the ice near Alaska Pools of melting ice linked to global warming causing algae to bloom twice as fast Previously scientists thought ice blocked the sunlight needed for plants to grow; now they think melting ice pools concentrate the sunlight like a magnifying glass

There is a generation of young adults for whom the notion of a Chesapeake Bay populated by an abundance of blue crabs is nothing more than a story told by their elders. It was about two decades ago that the first alarms began to sound about the decline of the blue crab. Early in 1993, stories began to appear in the media about decreasing numbers of crabs in the bay. Destruction of forests and wetlands, development, pollution, an overabundance of rockfish and overfishing were all suggested as possible causes.

Conservationists say that pollution from farms, wastewater treatment facilities, storm water runoff, and power plants in the 64,000 square mile watershed — which includes parts of six states and the nation’s capital — is slowly killing the bay.

The risk of blue-green algal blooms off the coast of Finland, especially in the Gulf of Finland and around its mouth, is mainly moderate this summer, environmental researchers have reported, and the risk is much lower in comparison to last summer

An environment official yesterday painted a bleak picture of pollution in China's rivers, lakes and seas, saying the problem in the near-shore water of major coastal economic zones was particularly serious.

TALLAHASSEE — A Florida administrative law judge Thursday rejected a challenge by five environmental groups to the state's proposed water pollution rules.