Though perhaps a little strongly stated, here is an article from Mercola.com about the dangers of common cord practice in hospital birth, asking whether this practice is causing potential brain dammage in babies. Interesting to think about the mechanics as nature intended:
Newborn lungs exist in a "compacted state" suitable for the womb. When the infant is born, the placenta and cord pulse for up to 20 minutes, delivering a burst of blood volume to the infant's system. This blood burst is just what is needed for the lungs of the newborn to expand.