lunedì 22 febbraio 2016

NYT Science: Can You ‘Suntan’ Through a Window?

Can You 'Suntan' Through a Window?
By C. CLAIBORNE RAY

Can you get useful quantities of vitamin D while sitting in a sunny window in the heart of winter?

Published: February 23, 2016 at 06:00AM

via NYT Science http://ift.tt/1L5TQsG