April 11, 2017, 8am PDT
Next month the Los Angeles County Metropolitan Authority will decide what type of buses to purchase to replace 1,000 aging diesel buses. Two op-eds in the Los Angeles Daily News present alternative viewpoints.
October 10, 2015, 5am PDT
No, the title does not refer to Congress, it is meant to be taken literally: It is about the District of Columbia's sewage treatment plant that produces renewable energy by treating its biosolids with a new hydrolysis technology imported from Norway.
March 14, 2014, 10am PDT
Yes, one is with and the other without oxygen, and both divert waste from the landfill—but in terms of the end products, what is the advantage of anaerobic digestion? Simply put, does society face a shortage of compost or renewable energy?