Recent research published in Nature reveals that global humid heatwaves are intensifying due to coastal ocean warming. The study, analyzing data from 1982 to 2023, finds that approximately 50% of the increase in humid heatwave frequency and 64% of their spatial aggregation strength are linked to adjacent oceanic conditions. This intensification is attributed to tropical ocean-driven moisture, which exacerbates the severity of these heatwaves, posing significant risks to human health, including increased instances of heatstroke and other heat-related illnesses.