00:45 Precision positioning without satellitesSatellite navigation has revolutionized how humans find their way. However, these systems often struggle in urban areas, where buildings can interfere with weak satellite signals. To counter this, a team has developed an alternative, satellite-free system, which could improve applications that require precise positioning in cities, such as self-driving cars.Research Article: Koelemeij et al.News and Views: Phone signals can help you find your way in cities even without GPS09:19 Research HighlightsHow deforestation is the biggest threat to a rare lemur’s existence, and ultraviolet-activated molecules can kick-start plastic polymerization.Research Highlight: This rare primate will not survive deforestationResearch Highlight: Lights, chemical reaction! Plastics take shape with help from UV light12:16 Briefing ChatWe discuss some highlights from the Nature Briefing. This time, a survey reveals the challenges facing international postgraduate students, and the key takeaways from COP27.Nature Careers: Obstacle race: the barriers facing graduates who study abroadNature News: COP27 climate talks: what succeeded, what failed and what’s nextNew York Times: U.N. Climate Talks End With a Deal to Pay Poor Nations for Damage Hosted on Acast. See acast.com/privacy for more information.