PORTLAND, Ore. – Radical environmentalist Tre Arrow on Tuesday pleaded guilty to arson charges as part of a deal with prosecutors that will keep him behind bars for more than two years. Arrow, who legally changed his name from Michael Scarpitti, was charged with firebombing three cement trucks at Ross Island Sand & Gravel in Portland and setting fire to logging trucks and a tractor near Estacada. On his Web site, the 34-year-old said recently he did not want to risk receiving a life prison sentence and called the plea deal an offer he "couldn't refuse." On Tuesday, he entered...