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.
1 Atmosphere-Low levels of greenhouse gasses such as carbon dioxide can cause the Earth to cool leading to an ice age. 2  Ocean currents-Ocean currents can have a great impact on the Earth's climate. 3  Changes in currents can cause ice sheets to build up.