Challenges and opportunities of the spatiotemporal responses to the global pandemic of COVID-19. Issue 4 (2nd October 2022) - Phil Yang, Chaowei; Bao, Shuming; Guan, Wendy; Howell, Kate; Hu, Tao; Lan, Hai; Li, Yun; Liu, Qian; Smith, Jennifer; Srirenganathan, Anusha; Trefonides, Theo; Wang, Kevin; et al.