Washington Post: The world’s policymakers and scientists have made a critical error in how they count biofuels’ contribution to human-generated greenhouse gas emissions, according to a new paper published Thursday in the journal Science. While the article addresses a wonkish subject — how to measure the environmental impact of energy sources such as ethanol and wood chips, which absorb carbon as they grow but release it back into the atmosphere when they’re burned — it has broad implications. The …