In the 1970’s, they spoke about the coming of an ice age in the same matter that we in this age speak about the growing power of global warming. One reason they supported that idea in the 70’s is because usually about every 11,500 years, we go through cycles of shifts from ice ages and interglacials because of the changes in earth’s tilt and orbit around the sun. When the summer comes and the sun cannot more directly affect the northern hemisphere, ice sheets grow and increase the amount of radiation from the sun reflected back to space that causes an ice age. But as more studies were invested in this topic, it showed that the more greenhouse gasses that we humans put in our atmosphere have a larger weight and effect than the predictions made about ice age periods. The trends of our current temperature and future predictions continue to be at an increasing rise and this time we have factual evidence about it. On top of this, the earth’s orbit and tilt are not as strong as we think on this and are not in the same predicted time scale. Those predictions were too weak to cause an ice age because they are off by approximately 10,000 years.

Last modified: 23 October 2017