Sediba's backbone, and antibacterial bacteria

This month, the bones missing from Australopithecus sediba's backbone are uncovered, but what do they reveal about this ancient hominid's posture? Also, why a link to the nervous system is crucial for salamander limb regeneration, the bacteria that can treat bacterial infections, the social stomach in ant colonies, and even old worms can combat the ageing process... Get the references and the transcripts for this programme from the Naked Scientists website