Audubon's Birds of America at the University of Pittsburgh The University of Pittsburgh is fortunate to own one of the rare, complete sets of John James Audubon’s Birds of America . It is considered to be the single most valuable set of volumes in the collections of the University Library System (ULS). Indeed, only 120 complete sets are known to exist. While Audubon was creating Birds of America , he was also working on a companion publication, namely, his Ornithological Biography . Both of these sets were acquired by William M.
Mar 28 2013 Do 97% of UK Doctors Prescribe Placebos? A recently published survey at PLOS One of UK primary care doctors reports that 97% have prescribed an “impure placebo” at least once in their career. Most news reporting of this survey leave off the “impure” bit. Let’s take a closer look at what this means. The survey asked about “pure” placebos, which are inactive sugar pills or a similar inactive treatment, and “impure” placebos, which are effective medicines given in a way that might not have a clinical effect.