Alliance for Toxic-Free Fire Safety Responds SAN FRANCISCO, May 8, 2012 /PRNewswire-USNewswire/ -- The Chicago

New research from UC Davis and Washington State University shows that PCBs, or polychlorinated biphenyls, launch a cellular chain of events that leads to an overabundance of dendrites -- the filament-like projections that conduct electrochemical signals between neurons -- and disrupts normal patterns of neuronal connections in the brain.

It's never been easy to be a polar bear.

HARRISBURG, Pa., Feb.

NASHUA, N.H., Jan. 26, 2012 /PRNewswire/ -- Steven St.