[tokenadult]

I see there is a recent press release about that ridiculous and poorly evidenced claim. (The haphazard survival of fossils means the confidence interval around such an estimate must be quite large.)

A more nuanced view of the relationship between brain size and brain capability can be found in a Scientific American article that quotes some of the leading researchers on the issue.

http://www.scientificamerican.com/article.cfm?id=does-brain-...

As another reply has already pointed out, the Flynn effect

http://cscs.umich.edu/~crshalizi/reviews/flynn-beyond/

is an empirical observation that IQ scores in large, pan-national data sets that have been gathered by standardized methodologies have been rising all over the world for most of the last century.