You cant train kids in a world where adults have no concept of what science literacy is. The adults are gonna squash the creativity that would manifest itself, because theyre clueless about what it and why it matters. But science can always benefit from the more brains there are that are thinking about it - but thats true for any field.
The difference between a nation and a nationality is clear, but it is not always observed. Likeness between members is the essence of nationality, but the members of a nation may be very different. A nation may be composed of many nationalities, as some of the most successful nations are.