By C. CLAIBORNE RAY
As an illness like a cold progresses, the color changes, and even green mucus is normal.
Published: August 18, 2015 at 02:00AM
from #NYT Science Read the full article here: https://ift.tt/1IWHZbW
via IFTTT
By C. CLAIBORNE RAY
As an illness like a cold progresses, the color changes, and even green mucus is normal.
Published: August 18, 2015 at 02:00AM
from #NYT Science Read the full article here: https://ift.tt/1IWHZbW
via IFTTT