The New York Times

Scientist at Work Blog: Atop a Volcano, the Ages of Red Pines

Tree-ring researchers scout forest patches along Mount Tajumulco in Guatemala hoping to find some ancient trees.

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Green Blog: On Our Radar: Obama’s Energy Blitz

The president plans stops in Nevada and New Mexico to emphasize diversification of the nation’s energy sources.

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A Measured Rebuttal to China Over Solar Panels

The Commerce Department decided to impose the tariffs after concluding that the Chinese government provided illegal export subsidies to manufacturers in China.

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James Cameron’s Rocket Plunge to the Planet’s Deepest Recess

James Cameron plans to ride a vertical torpedo into the planet’s deepest recess, the Challenger Deep in the western Pacific, nearly seven miles down.

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Russia Struggles to Curb Energy Waste

Economics, not environmental qualms, have won backing for an energy efficiency drive, but progress grinds against grass-roots skepticism and entrenched attitudes.

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Op-Ed Contributor: Spring Gets Ahead of Itself

Over the past few decades, spring has been arriving earlier, creating mismatches in how species interact.

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Green Blog: Bike Hour Is Nigh

Organizers call for a global cycling rally to encourage more people — especially city dwellers — to push for greater bike safety.

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Green Blog: U.S. Plans Tariffs on Chinese Solar Panels

The tariffs are smaller than some American industry executives had hoped for – 2.9 percent to 4.73 percent – but additional ones might be imposed in May.

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Green Blog: New York Maps Viable Offshore Wind Power

Working with NOAA, New York officials seek to identify the best locations for wind farms with an eye to protecting commercial shipping and fishing as well as ecological niches.

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Green Blog: On Our Radar: Madagascar’s Biodiversity

Researchers suggest that many rare species in Madagascar originally arrived on floating clumps of vegetation after major storms, but some scientists express skepticism.

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