Where does dust come from?
86070
Practically everywhere.  Outside, it is minute particles of soil and debris, and pollen from trees, and almost everything.  Inside, the main source is fiber from fabrics, dead skin cells from people and animals, and the dust that is tracked in from outside.  Most materials break down a little bit (microscopically) from friction with other materials, including the human body.  Those tiny broken off parts become dust, and are the reasons why we detect wear.  A very old object is literally worn away to the point where the difference is detectable.
437631
air...or dirt...or..hmm..how bout you go and find out
63175
Your ass! Where the hell do you think it comes from?
1090852
Usually in a dusty place, like the desert; hence the name!
323751
Dust is everywhere, it is in the air and made of tiny particles that can get into closed rooms, unless they are 100% air tight. Dust is made of dirt, dead skin cells, and anything else small enough to float in the air.
1084188
The entire "dust bowl" story of the US is a known case of man-induced desertification. The Department of Agriculture has a program to help farmers retire land for a number of years, and rotate crops (for example, the planting of nitrogen fixing beans one year and corn the next) to lessen future impacts of desertification in agriculture. Windbreaks are also common agricultural practice to avoid desertification. So, yes, it is widely known that desertification results from human activities.
5524
They come from the east. Meteorologists refer to the wind by the direction in which the winds are coming.
390457
You should find the source of the dust; most likely it's from within the house such as carpeting or even dust that has built up in the ducts of your HVAC system.  \n\n1) Replace old carpeting or vacum it thoroughly and regularly with a high quality air-purifying vacum.  \n2) Replace the filters in your HVAC blowers/fans with high-quality air purifying filters.\n3) Have your HVAC system cleaned.
1116286
yes , rain washes  dust and pollen out of the air
518436
No, it comes from inside the TV. Only a tiny fraction is from cosmic radiation. PS, the number of points i have from the time of answering right now, is 24 less than my year of birth.
124798
This has to do with the way the earth was formed. Dust particles gathering together and spinning at the same time. Spinning causes things to take spherical shape due to centrifugal force.
1169156
Don't worry too much...Yes,the dust is not good,but that what really "kills" and afflicts our health is STRESS..GOOD LUCK!!!
443597
A vast quantity of dust in the atmosphere mainly caused by volcanic eruptions.
786365
glass dust. Don't inhale it or touch it with your bare hands!
834460
Sand.  Hahaha...no really, send them baby wipes.  There is so much dust and sand there that they are used for everything.
351366
The earth is continuously bombarded by small cosmic dust particles, ranging in sizes. The bigger onces millimeter size and bigger burn up in the atmosphere of the earth leaving visible traces that may last seconds or longer.
788123
to keep dust off things like clothes from the dry cleaner etc