I want to know the answer to the following question:
What happened after radioactivity was realized?
All the background I'm provided with is that "Alfred Wegener's theory of "continental drift" was widely dismissed when he proposed it in the 1910s, but new data gathered in the 1950s and 1960s led to the theory of plate tectonics, which provided a plausible mechanism for it.". Is that enough to answer the question?
Answer: no