03 China uses stem cell therapy to treat severe COVID-19 cases Chinese researchers are studying the use of stem cell technology in the treatment of people critically ill with COVID-19 03 California declares state of emergency after death California has declared a state of emergency after announcing its first coronavirus death, bringing the U.S. death toll from the disease to 11 04 US wants UK to reverse Huawei 5G decision Members of the U.S. Congress on Wednesday took another step to try to prod Britain to reverse its decision to allow China’s Huawei Technologies Co. to build portions of the U.K.’s next-generation 5G networks 05 In photos Citizens resume work in early March |