Companies are always looking for ways to make their employees more productive. Now, a new study shows that making buildings more environmentally friendly, or “green,” can make them healthier for the workers inside -- and improves those workers' cognitive functions. This week on WRVO's health and wellness show "Take Care," hosts Lorraine Rapp and Linda Lowen speak with Dr. Piers MacNaughton, an associate director of the Healthy Buildings Program at the Harvard Center for Health and the Global