Swiss biologist David Brawand published his results on a special gene research. This explains quite impressively how humans like all other mammals switched from eggs to giving birth. The main conclusion is: it's the milk that replaced the eggs.

Read all of the findings here:

• Loss of egg yolk genes in mammals and the origin of lactation and placentation

Those are the results and findings of modern biology I really like to read about. We are living in quite thrilling times ;-)