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.
Ice Ages. Our current climate regime -â a regime weâve had for the past ~2 million years â- is characterized by long periods of ice ages and shorter warm periods. The last ice age ended about 12,000 years ago, and since then weâve been in a warm period. Some argue that global warming is no concern, since the Earth will naturally switch back to an ice age. This is very likely to be true: an ice age is almost certainly in our planetâs future. But itâs a question of when. Our current concerns about climate change focus on the coming decades to the next century â- the time period relevant to our childrenâs and grandchildrenâs experience.