Environmental Engineering & Toxicology

Professor Alvarez-Cohen develops methods for bioremediation of contaminants such as perchloroethene and trichloroethene using naturally occurring microorganisms, particularly one type known as "dehalococcoides." She uses advanced molecular methods to understand key elements of this process, looking at increasingly complex cultures of microorganisms. Molecular tools provide clues about how the systems work and, consequently, what can be done to enhance bioremediation.

“Imagine taking some parts from a car, from an air conditioning system, some more parts from a plumber, and you build a machine that is run with heat instead of gasoline. Then you hook it up to a free energy source such as the sun, and what you get is a clean, sustainable, cost-efficient source of hot water, electricity and even cooling.” Since 2005, Matt and his team have been doing exactly that in Lesotho: Building a solar powered plant for a local hospital as a showcase project for other applications.

"Our interest is to push energy efficiency as rapidly as we can to address very, very serious problems of climate change," competition organizer Karina Garbesi said. Read the full story and watch a video

“I obviously can’t speak for all farmers, but competition and the downward pressure on food prices means that farmers have to go to great lengths to satisfy customers,” Mulvaney said. “If there’s anything not in alignment with sales, it will not be balanced. Selling food is number one.” Read the full story

But away from transmission lines, DC is also gaining ground as an alternative in the developing world, according to Karina Garbesi, a professor and visiting researcher at LBNL. Getting power to remote areas from an AC grid is very costly and doesn't make much sense, since some of these regions can construct wind turbines and solar farms.

"Our findings add to the list of naturally occurring chemical compounds that could serve as biofuels, which means more flexibility and options for the biofuels industry," says Harry Beller, a JBEI microbiologist who led this study. "We're especially encouraged by our finding that it is possible to increase the methyl ketone titer production of E. coli more than 4,000-fold with a relatively small number of genetic modifications." Read the full story

When he became chief, many people wondered whether Mr. Cook, a skilled manager of Apple's operations, could ever rival the visionary influence of Mr. Jobs on Apple products. Instead, it appears Mr. Cook could make his earliest and most significant mark by changing how Apple's products are made. ''I want to give credit to Tim Cook for this,'' said Dara O'Rourke, associate professor of environmental and labor policy at the University of California, Berkeley. ''He's admitting they've got problems.''

At Santa Rosa's Regional sewer plant, ponds covered with fast-growing aquatic plants are being used to help clean toxics and pollutants out of the water as part of the wastewater treatment process. But there's another, very different benefit those plants can offer as well. While showing off the FAB project at the treatment plant, Caden Hare explained that the effort to develop on site energy generation was driven in part by the needs of the facility itself. Read the story and hear audio clips