Thirty years ago, scientists applied fertilizer to two test plots. More than 12 percent of the nitrogen is still in the soil, and nearly as much has leached into groundwater.
The Marcellus Shale fracking boom is pumping out more natural gas than expected.
Construction must begin by the end of the year or the wind farm will lose out on tax credits and a big investment. But a couple of lawsuits still stand in the way.
Under a utility's proposal, solar-panel owners in Arizona would be paid $50 to $100 less each month for their excess electricity. Cue costly brawl.
You may have heard that fracking is reducing carbon emissions because natural gas is cleaner than coal. But there's a big hole in that argument.
In Michigan, tourists are lining up for wind-energy tours that let you go right up and touch a turbine.
In 2012, energy-related carbon dioxide emissions in the U.S. fell to 1994 levels.
Flawed advice and ratings from a private food-inspection firm led to tainted cantaloupe that killed 33 people, say farmers who are filing suit against the firm.
Frackers have been flouting a Colorado rule that requires them to disclose the chemicals they use. Seven companies have been fined $1,000 apiece.