Two dams illustrate challenge of maintaining older designs

Twelve years ago, widespread destruction from Hurricane Katrina on the Gulf Coast helped compel federal engineers 2,000 miles away in California to remake a 1950s-era dam by constructing a massive steel-and-concrete gutter ...

What we know so far about problems at the tallest US dam

It's been more than a week since engineers at the nation's tallest dam noticed damage to its emergency spillway, launching a series of events that culminated with the threat of catastrophic flooding and the two-day evacuation ...

New England's 1816 'Mackerel Year' and climate change today

Hundreds of articles have been written about the largest volcanic eruption in recorded history, at Indonesia's Mt. Tambora just over 200 years ago. But for a small group of New England-based researchers, one more Tambora ...

Mohawks become first tribe to take down a federal dam

A century after the first commercial dam was built on the St. Regis River, blocking the spawning runs of salmon and sturgeon, the stream once central to the traditional culture of New York's Mohawk Tribe is flowing freely ...

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