I was getting a number of PMs, so here's my thoughts.

http://www.thechairmansblog.com/amarantus-bioscience/blogs/

I think some people don't notice the pictures, but take a look at all the blog post pictures. The vast majority are some scientist doing some science looking thing. The last two had the puzzle theme with the latest one showing the puzzle is about to come together.

It can't get anymore obvious than that!

jk