Dating after being single for a long time
The idea behind radiocarbon dating is straightforward, but years of work were required to develop the technique to the point where accurate dates could be obtained.
Research has been ongoing since the 1960s to determine what the proportion of in the atmosphere has been over the past fifty thousand years.
Libby received the Nobel Prize in Chemistry for his work in 1960.
I realize that my past experiences have made me who I am today, but I still wish I could go back in time and have a sisterly chat with poor, clueless, "younger me" about relationships.
I could've written three novels, started a business, and hiked the Appalachian Trail with all the wasted time and energy.
This period of courtship is sometimes seen as a precursor to engagement or marriage.
Dating as an institution is a relatively recent phenomenon which has mainly emerged in the last few centuries.
Additional complications come from the burning of fossil fuels such as coal and oil, and from the above-ground nuclear tests done in the 1950s and 1960s.