The arsenic used to treat wooden decks, utility poles and fences will leach into the environment for decades, posing a grave threat to groundwater reserves, say two studies in the journal Environmental Science & Technology. The studies were based on wood treated with chromated copper arsenate (CCA). The researchers, from the University of Miami, the […]
For over two millennia, musicians and scientists have puzzled over why some combinations of musical tones played together sound more harmonious than others. Now, Duke University perception scientists David Schwartz, Catherine Howe and Dale Purves have presented evidence that variation in the relative harmoniousness, or “consonance,” of different tone combinations arises from people’s exposure to […]
