Last call for submissions for 'Praxis' and 'The Giants' Shoulders'

Since The Lay Scientist had technical problems with the blog, there was no Praxis last month. Martin will thus post it this month (on or close to the 15th). He still has all the entries from last time around, but please also send some fresh submissions as well.

Next edition of The Giant's Shoulders will be hosted by Stochastic Scribbles on April 16th. So, if you have History Of Science posts (or are just about to write one), please submit.