Nature Podcast

00:46 Ancient humans made bone tools 1.5 million years agoA 1.5-million-year-old cache of animal-bone tools reveals that ancient humans systematically crafted with this material much earlier than previously thought. Researchers uncovered 27 bone artefacts in Tanzania honed into sharp tools almost 40 cm long. This discovery pushes back the dedicated manufacture of bone tools by around a million years and could have helped these early humans develop new kinds of technology. “This raises a lot of interesting questions,” says study author Ignacio de la Torre.Research Article: de la Torre et al.09:11 Research HighlightsCane toads’ remarkable homing abilities, and evidence that the block of rock that makes up southern Tibet originated in what is now Australia.Research Highlight: Take me home, country toadsResearch Highlight: Lhasa′s rocks reveal an Australian birthplace11:45 A trove of antibacterial molecules hidden in human proteinsTo help protect against infection, cells in the body will selectivel