lunedì 14 marzo 2016

NYT Science: Dark Wall Stains May Signal Indoor Pollution

Dark Wall Stains May Signal Indoor Pollution
By C. CLAIBORNE RAY

A common source of soot is partly burned carbon fuel; perfumed room candles are a surprisingly big cause.

Published: March 15, 2016 at 05:00AM

via NYT Science http://ift.tt/1SMgXL4