1. Manuel Delgado-Baquerizo
2. David J. Eldridge 
3. Yu-Rong Liu 
4. Blessing Sokoya 
5. Jun-Tao Wang 
6. Hang-Wei Hu 
7. Ji-Zheng He 
8. Felipe Bastida 
9. José L. Moreno 
10. Adebola R. Bamigboye 
11. José L. Blanco-Pastor 
12. Concha Cano-Díaz 
13. Javier G. Illán 
14. Thulani P. Makhalanyane 
15. Christina Siebe 
16. Pankaj Trivedi 
17. Eli Zaady 
18. Jay Prakash Verma 
19. Ling Wang 
20. Jianyong Wang 
21. Tine Grebenc¹ 
22. Gabriel F. Peñaloza-Bojacá 
23. Tina U. Nahberger 
24. Alberto L. Teixido 
25. Xin-Quan Zhou, 
26. Miguel Berdugo 
27. Jorge Duran 
28. Alexandra Rodríguez 
29. Xiaobing Zhou 
30. Fernando Alfaro
    31 Sebastian Abades
31.  Cesar Plaza 
32. Ana Rey 
33. Brajesh K. Singh 
34. Leho Tedersoo 
35. Noah Fierer

The structure and function of the soil microbiome of urban greenspaces remain largely undetermined. We conducted a global field survey in urban greenspaces and neighboring natural ecosystems across 56 cities from six continents, and found that urban soils are important hotspots for soil bacterial, protist and functional gene diversity, but support highly homogenized microbial communities worldwide. Urban greenspaces had a greater proportion of fast-growing bacteria, algae, amoebae, and fungal pathogens, but a lower proportion of ectomycorrhizal fungi than natural ecosystems. These urban ecosystems also showed higher proportions of genes associated with human pathogens, greenhouse gas emissions, faster nutrient cycling, and more intense abiotic stress than natural environments. City affluence, management practices, and climate were fundamental drivers of urban soil communities. Our work paves the way toward a more comprehensive global-scale perspective on urban greenspaces, which is integral to managing the health of these ecosystems and the well-being of human populations.