Nature Podcast

In this episode:00:46 Inside the brains of sleeping octopusesResearchers have probed the brains of octopuses and confirmed previous reports suggesting that these invertebrates have a two-stage sleep cycle similar to that seen in many vertebrates. The team suggests this system may have evolved independently in the two groups, as there are millions of years of evolutionary history between them. However, despite its presumed importance, it is a mystery why this system exists at all.Research article: Pophale et al.Nature Video: Do octopuses dream? Brain recordings provide the first clues10:37 Research HighlightsA huge volcano eruption that caused the most extreme lightning ever recorded, and a paper-inspired fabric that can keep you warm and cool.Research Highlight: Underwater volcano triggered the most intense lightning ever recordedResearch Highlight: Fabric warms or cools the body at the flick of a switch13:03 A hormone associated with more effective weight lossCalorie-restricted diets often lead to rapid weig