When one doesn't have a heater or air conditioner in one's home, windows are important to making it comfortable. That's the case here in Ethiopia. We have no heat or A/C, because we don't need it much of the time. In the month of May, it seems all the flies are re-populating and swarming and the temperature is the highest of the year. Hence, if we leave the windows and/or doors open to cool it off, the flies invade and are in and on everything. But, this spring we had