Age and nationality on CV I think the question of whether to put, explicitly, one's age and nationality on an academic cv is non trivial and would like the view of the community...

Up to now I have believed that (an estimation of) age can be inferred from the dates given in a candidate's Past Education (date of masters, phd, number of posdocs etc). Moreover, I have colleagues who got stuck doing multiple postdocs who were then discriminated against for their so called advanced years when applying for faculty posts ("(S)he's approaching 40 and hasn't had a faculty position yet; if they were good they would already have found a post, right?"). On the other hand, for someone who has advanced quickly, it might be an advantage to highlight that they have reached a faculty post early (or it might inadvertently highlight the young age and lesser experience of the candidate).

As for nationality, when applying abroad it can be a definite disadvantage to show the search committee that you would need migratory support to get a visa, green card etc. Or perhaps it can be advantageous to show a different background that could be brought to the post to enrich the diversity of the faculty....

As you can see, I am stuck seeing positive and negatives for both pieces of information. Is there a definitive answer or convention that one should follow?
There is a reason why many countries ban explicit characteristics in job ads, and that is exactly to avoid discrimination. But you should check some examples of CV's for the country you wish to apply to. 

Also, applying as a foreigner is different than as a local. Check the universities site on that and you'll see the requirements, which might include proof of nationality besides the CV, which is where you give the details of age and nationality.