20 Years After Katrina, New Orleans Is ‘at a Tipping Point’

The city has taken pride in its ability to endure. But many residents, fed up with dysfunction and soaring costs, want it to strive for more.

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A Park That Floods Every Time It Rains

Flushing Meadows Corona Park, which covers nearly 900 acres in Queens, has been plagued with expensive infrastructure problems. A new report suggests ways to address them.

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Delaware Looks to ‘Living Shorelines’ to Save Its Coasts

Along with other East Coast states, Delaware is using natural materials to protect vulnerable coastal areas.

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The Rainforests Being Cleared to Build Your R.V.

American demand for tropical wood that is used in motor homes, conservationists say, is accelerating the disappearance of some of the world’s largest forests.

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Map of New Orleans Highlights Sinking and Stable City Spots

A new study identified hot spots of sinking levees that will need to be prioritized for maintenance to withstand future storms and flooding.

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Swampbuster, Which Protects Millions of Acres of Wetland, Is Under Threat

A longtime provision of federal law called Swampbuster, which has protected millions of acres of wetland from being farmed, is facing a legal challenge.

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Airport Was Given Bird Strike Warning Days Before South Korea’s Deadly Crash

Operators of the airport where Jeju Air Flight 2216 crashed in December, killing 179, failed to meet both international and South Korean guidelines intended to prevent such strikes.

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E.P.A. Investigations of Severe Pollution Look Increasingly at Risk

The agency will no longer shut down “any stage of energy production,” absent an imminent threat, a new memo says, and will curtail efforts to cut pollution in poorer areas.

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In the Land of the Jaguars

Brazil’s Pantanal, the world’s largest wetlands, is home to a sizable population of jaguars. Near one tiny outpost, the normally shy animals are remarkably easy to observe.

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E.P.A. Declares ‘Greatest Day of Deregulation Our Nation Has Seen’

Lee Zeldin, the E.P.A. administrator, reframed his agency’s mission, saying it is to make it cheaper to buy cars, heat homes and run businesses.

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