As a child, Rebeca Quiñonez-Piñón wondered where monarch butterflies stop for a meal and a night’s rest on their long migrations across North America. Now she and other scientists are attaching tiny tracking devices to hundreds of butterflies to find those critical stopover locations before they disappear. Swarms of dazzling orange-and-black monarchs use environmental cues
Low- and middle-income countries demand UN-led solutions to growing debt and wealth inequality problems.Credit: Cristina Quicler/AFP via Getty Let’s imagine a world in which almost 90% of the population earns twice as much and works half as many hours as today. One in which the share of global wealth held by the poorest half increases,
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