Business & Technology

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  new nukes

  A new documentary puts fresh, young faces on the old debate over nuclear power

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  The nitrogen wars

  Our fertilizer is killing us. Here’s a fix.

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  cover story

  The open-source movement to hack your arugula

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  Fossil freedom

  California wants all of its electricity carbon-free. How’s that possible?

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  Power Exchange

  When coal goes low, Colorado goes Rocky Mountain High

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  Radical honesty

  The EPA’s coal plan is a ripoff for Americans, according to the EPA

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  Cover story

  The fight for cheap solar is going South

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  measure up

  Should big corporations pay for clean energy? Portland voters will decide.

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  hot wires

  Hot weather strains the grid. Here’s how we could fix that.