This one's pretty easy: according to Google search trends, more Americans are searching for "stock market crash" now that at any point since the last crash.
Right now, search traffic for the term "stock market crash" is hitting about 70% of the most volume this term has ever gotten through Google search.
And so while this data doesn't convey absolute search volume for the term, we do know that Americans appear to be looking for information about a stock market crash at the highest level in about 7 years.
Here's the chart, do with it what you will.