Image Credit - NASA MODIS; Via accuweather.com
Yes, the sky does appear blue. Blue, that is, except when it's filled with wind-borne dust. Check out this awesome image from NASA's Earth Observatory site.
"How do dust and the oceans have anything to do with each other?" you might be wondering. Well, wind-borne dust (otherwise known as Aeolian Transport) contributes significantly to the formation of marine sediments, especially in remote areas.
