This week, the brain pathways of egg laying in fruit flies, and preventing fractures in metallic glass.In this episode:00:46 Working out the wiring behind fruit fly behaviourResearchers have identified a neural circuit linking mating and egg laying in female fruit flies. Research Article: Wang et al.06:01 Research HighlightsAncient, cave-dwelling cockroaches, and hairy moths dampen sound. Research Highlight: Cockroaches preserved in amber are the world’s oldest cave dwellers; Research Highlight: Stealth flyers: moths’ fuzz is superior acoustic camouflage07:57 Making better metallic glassMetallic glasses have many desirable properties, but these materials are prone to fracturing. Now, a new manufacturing process may have overcome this issue. Research article: Pan et al.; News and Views: Metallic glasses rejuvenated to harden under strain13:47 News ChatCoronavirus outbreak updates, a survey shows Indian bird numbers are in decline, and the genomes of New York rats. News: Coronavirus: latest news on spreading infection; News: Hundreds of bird species in India are declining; News: Genomes reveal how New York City’s rats thrive in the urban jungle For information regarding your data privacy, visit acast.com/privacy