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Over the years I have talked with many single women about their Choice Mom journeys for the Choice Chat podcast and/or radio show. I know it’s not easy, but nothing in life worth having is.” — from one member of the Choice Mom discussion group to another We kick off our March focus on "conscious conversations" with this wonderful response by CNN’s Jessica Ravitz to a Huffington Post commentary speculating why women like us are not married.
One such 39-year-old woman recently posted of her own dilemma. No time will be the perfect time, so you just need to take that leap of faith and do it.
Absolute geochronology can be accomplished through radioactive isotopes, whereas relative geochronology is provided by tools such as palaeomagnetism and stable isotope ratios.
By combining multiple geochronological (and biostratigraphic) indicators the precision of the recovered age can be improved.
The science of geochronology is the prime tool used in the discipline of chronostratigraphy, which attempts to derive absolute age dates for all fossil assemblages and determine the geologic history of the Earth and extraterrestrial bodies.
Libby received the Nobel Prize in Chemistry for his work in 1960.
The radiocarbon dating method is based on the fact that radiocarbon is constantly being created in the atmosphere by the interaction of cosmic rays with atmospheric nitrogen.
More slowly decaying isotopes are useful for longer periods of time, but less accurate in absolute years.
The method was developed by Willard Libby in the late 1940s and soon became a standard tool for archaeologists.