Bohemians live in alternative spaces, these are places that are not normally considered suitable for living in. They don't make wealth their priority. Money is only a means of survival, so they can live for their arts/craft/music/literature...etc.
What causes ice-ages? Fluctuations in the amount of insolation (incoming solar radiation) are the most likely cause of large-scale changes in Earth's climate during the Quaternary. In other words, variations in the intensity and timing of heat from the sun are the most likely cause of the glacial/interglacial cycles.
What causes an ice age? Ice age intervals seem to correspond with long periods of worldwide climatic cooling. It should be noted that there are numerous factors that affect the Earth's climate. There are two main natural factors, however, that are thought to influence long-term changes in the Earth's climate. Plate Tectonics.