First day of spring, 2008. Right. PZ Myers blogged about this interesting new report: examination of the genes for yolk proteins and milk proteins reveals a clear story of the evolution of proteins that nourish embryos and young in vertebrate animals. Pseudogenes figure prominently, and the explanation makes no sense without them. The article (in PLoS Biology) was accompanied by a nice lay summary, but PZ's post is very good too.