NY Times 25 most provocative science questions. Today's New York Science Times celebrates the section's 25th
anniversary. It was perhaps the first dedicated science section (and
could be the last the way things are going). See a short history of the section.
Naturally, the questions are not the most significant, deepest, hardest
or anything else but I think they do a fair job of being the most
provocative in the sense that they have in the past and continue to
provoke considerable discussion.