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A sign of trouble in the ethanol business, VeraSun seeks bankruptcy protection after a rapid decline in corn prices and a misplaced bet on feedstock purchases.
Corn ethanol firms talk merger, clean-tech researcher predicts a shift to quality in investments, and Calgary researchers develop a CO2 "air scrubber."
To "get ahead of" future challenges brought by capital market turmoil, second-generation ethanol company lays off president and other executives in an effort to preserve cash.
In 2002, President Bush signed legislation to avoid a repeat of the "hanging chad" fiasco of the 2000 elections. But as the U.S. heads to the polls, worries about e-voting still linger.
Following an investment boom, analyst voices worries over the impact of falling corn prices on ethanol makers.
Consolidation comes to green tech: Oil refiner Valero snaps up the ethanol refineries of bankrupt VeraSun while solar developer Recurrent Energy buys another company's project pipeline.
Algae demonstration plant in Colorado, Pacific Ethanol's quarterly loss, a peek at a quiet clean-tech energy investor, using biomass from Hurricane Ike instead of coal, Fisker expands in Michigan, and the ethanol "blend wall."
There's plenty of enthusiasm for funding the latest green-tech or alternative-fuel company. The problem is the economy stinks, and doesn't look like it will improve anytime soon.
Weeks after losing its CEO, the biodiesel maker withdraws plans for its public offering.