What Causes an Ice Age?

Although I m sure many of us have heard the phrase "ice age," what exactly does that mean? Is it true we re in an ice age right now? Today we re exploring questions like these to better understand this climatic phenomenon. Help support me over on patreon: https://www.patreon.com/atlaspro Follow me on twitter @theatlaspro Music: https://soundcloud.com/atlas-pro-music/ice-age Some links: https://en.wikipedia.org/wiki/Geological_history_of_oxygen#/media/File:Oxygenation-atm-2.svg https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1578726/ https://www.britannica.com/science/Cryogenian-Period https://newatlas.com/fossil-fats-snowball-earth/58292/ https://opentextbc.ca/geology/chapter/5-2-chemical-weathering/ http://itc.gsw.edu/faculty/bcarter/physgeol/weather/chemwth2.htm http://academic.emporia.edu/aberjame/ice/labs/lab03.htm https://en.wikipedia.org/wiki/Quaternary_glaciation#/media/File:Vostok_Petit_data.svg https://en.wikipedia.org/wiki/Quaternary_glaciation#/media/File:Milankovitch_Variations.png https://i.redd.it/g1s96i1sznt01.jpg https://www.pnas.org/content/112/27/8232 https://darchive.mblwhoilibrary.org/bitstream/handle/1912/2272/Naturegeosciences.pdf;jsessionid=66F4332BEB6056CD58019C0BC996B9E9?sequence=1 https://www.nature.com/articles/ngeo2931