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"I’m no nuclear physicist but it seems like there would be a whole lot of radioactive nucleotides with varying half lives disseminated into the upper atmosphere and the oceanic ecosystem. It seems as if those nucleotides would then spread out to other ecosystems through the food chain and various cyclical ecological systems and would ultimately find their way into human tissues. You can’t detonate a nuclear weapon above ground without creating large amounts of nuclear fallout. You don’t need to be a nuclear physicist to know this."

Hahaha! Excellent. Thanks!

There have been many high altitude nuclear test shots, so we're already extinct and only imagining our existence. I'm sorry to inform you, though, that high altitude shots produce negligible amounts of fallout. Boring! Ground bursts produce the most and best fallout. The auroral displays from high altitude shots are really neat, though!

The Baby Tooth Survey was initiated by the Greater St. Louis Citizens' Committee for Nuclear Information in conjunction with Saint Louis University and the Washington University School of Dental Medicine as a means of determining the effects of nuclear fallout in the human anatomy by examining the levels of radioactive material absorbed into the deciduous teeth of children.

Founded by the husband and wife team of physicians Eric and Louise Reiss, along with other scientists such as Barry Commoner and Ursula Franklin, the research focused on detecting the presence of strontium-90, a cancer-causing radioactive isotope created by the more than 400 atomic tests conducted above ground that is absorbed from water and dairy products into the bones and teeth given its chemical similarity to calcium. The team sent collection forms to schools in the St. Louis, Missouri area, hoping to gather 50,000 teeth each year.[1] Ultimately, the project collected over 300,000 teeth from children of various ages before the project was ended in 1970.

Preliminary results published by the team in the November 24, 1961, edition of the journal Science showed that levels of strontium 90 in children had risen steadily in children born in the 1950s, with those born later showing the most increased levels.[2] The results of a more comprehensive study of the elements found in the teeth collected showed that children born after 1963 had levels of strontium 90 in their baby teeth that were 50 times higher than those found in children born before the advent of large-scale atomic testing. The findings helped convince U.S. President John F. Kennedy to sign the Partial Nuclear Test Ban Treaty with the United Kingdom and Soviet Union, which ended the above-ground nuclear weapons testing that placed the greatest amounts of nuclear fallout into the atmosphere.[3]

A set of 85,000 teeth that had been uncovered in storage in 2001 by Washington University were given to the Radiation and Public Health Project. By tracking 3,000 individuals who had participated in the tooth-collection project, the RHPR published results in a 2010 issue of the International Journal of Health Service that showed that the 12 children who later died of cancer before the age of 50 had levels of strontium 90 in their stored baby teeth that was twice the level of those who were still alive at 50.[