Nature Podcast

0:46 The mysterious ring in the distant Solar SystemQuaoar is a small, rocky object that lies beyond Neptune’s orbit. In an unexpected discovery, researchers have shown that this object has its own orbiting ring, similar to those seen encircling planets like Saturn. However, Quaoar’s ring shouldn’t exist, as it is at a distance far outside the theoretical limit at which rings are thought to be stable, and researchers are trying to figure out why.Research article: Morgado et al.News and Views: A planetary ring in a surprising place07:01 Research HighlightsA repurposed skin-disease drug suppresses alcohol consumption in people with alcohol-use disorder, and how volcanic eruptions may have contributed to social unrest in ancient Egypt.Research Highlight: Pill for a skin disease also curbs excessive drinkingResearch Highlight: Volcanic quartet linked to bad times in ancient Egypt09:26 Air pollutionExposure to polluted air has been linked to millions of deaths each year. But while much is known about the sources a