Following a brief historical survey of the popular 'slogans' that have influenced science education during the past quarter century and a review of current international debate on scientific literacy and science pedagogy, the author takes the view that while much of value has been achieved, there is still considerable cause for concern and that it is time for action in two senses. First, it is time to take action on the school science curriculum because it no longer meets the needs, interests and aspirations of young citizens. Second, it is time for a science curriculum oriented toward sociopolitical action. [...]