A paper published in PNAS presents a detailed map of how multiple cerebellar projections to the rest of the brain develop, identifying when and how these connections are established and consolidated. The results show that this connectivity emerges much earlier than expected, suggesting that the cerebellum may act as an early ‘hub’ essential for organizing the brain’s initial architecture.

Scientists from the City University of Hong Kong have found that nanoplastics can enter zebrafish via two pathways: waterborne exposure and dietary exposure. These tiny particles can cross biological barriers to enter the circulatory system, and then translocate to and accumulate in various organs, including the blood, brain, gills, liver, intestines, gonads, and muscles. The gills and intestines are the most important absorption organs, while the intestines serve as the primary excretion organ.