This comprehensive study illuminates the extraordinary genetic richness of indigenous Ethiopian cattle and provides a roadmap for leveraging cutting-edge molecular tools to revolutionize sustainable livestock breeding in the region.  

Beavers are spreading northwards into the Arctic and a new study provides detailed evidence of their expansion by dating the changes they have been making to the tundra landscape. The research, which combines tree ring analysis (looking at beaver browsing scars) with satellite imagery of surface water (highlighting dams), has allowed scientists to track and date beaver movements in remote areas of the Canadian Arctic.

Published in Nature, the study includes 128 complete genomes and reveals over one million new genetic variants, uncovering a unique genetic diversity with implications for evolution and health.

For the first time, the team has characterized the final migratory wave to South America, 1,300 years ago, and revealed the origin of these populations, with Y-chromosomal ancestry (“Ypykuéra”).