It's in that spirit that we reassessed our list of the 25 most head-turning college campuses in the country, in the process switching out some otherwise deserving notables (sorry Columbia) for some even better looking, heretofore overlooked gems.
The Global Initiative for Chronic Obstructive Lung Disease (GOLD) defines COPD as follows: Chronic obstructive pulmonary disease (COPD) is a common, preventable, and treatable disease that is characterized by persistent respiratory symptoms and airflow limitation that is due to airway and/or alveolar abnormalities usually caused by significant exposure to noxious particles or gases.
Purple gold (also called amethyst gold and violet gold) is an alloy of gold and aluminium rich in gold-aluminium intermetallic (AuAl2). Gold content in AuAl2 is around 79% and can therefore be referred to as 18 karat gold.