waderoush writes "There are plenty of waste-to-energy plants around the US, but most of them simply burn the waste, dumping carbon dioxide into the atmosphere. Gasification technology, by contrast, converts nearly all of the waste into gases like hydrogen and carbon monoxide that can be used to run generators and furnaces. The problem is that most gasification facilities are factory-sized. Now a startup outside Boston has built a combination shredder-dryer-pelletizer-gasifier that fits into 30-by-8-by-8-foot shipping container. The so-called 'Green Energy Machine' can be backed up to a loading dock by truck, processing 3 tons of solid waste per day and putting out enough synthetic gas to run a 120-kilowatt generator or a 240-kilowatt-equivalent furnace. The makers say the machine can eliminate 540 tons of carbon emissions per year, in large part by reducing the amount of waste that goes to methane-generating landfills."
egrep patterns are full regular expressions; it uses a fast deterministic
algorithm that sometimes needs exponential space.
-- unix manuals