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FDA grants emergency authorization for COVID-19 saliva test; CDC says virus rates in children are “steadily increasing”; Researchers struggling to recruit minorities for vaccine clinical trials; Los Angeles schools announce massive testing plan to get kids back in classrooms; COVID-19 deaths in U.S. top 170,000, nearly 5.5 million cases; Georgia college kids throw packed party, spark outbreak concerns; UNC Chapel Hill switches to remote classes after cases rise; Former Trump official: what I saw was “terrifying”; Michelle Obama, Sen. Sanders to speak at say one of DNC; DNC day one speakers focusing on sending a message of unity; Michelle Obama headlines first night of democratic convention; “I know Joe”: preview of Michelle Obama’s speech tonight; New CNN poll: race tightens ahead of democratic convention; CNN poll: Biden’s lead over Trump shrinks as enthusiasm grows; New CNN poll shows dead heat in key battleground states; CNN poll: Biden has 4 point lead over President Trump; Atlanta mayor discusses upcoming convention speech; Pelosi calls for house to return from recess for postal service vote; Postmaster general agrees to testify before congress; Speaker Pelosi to seek $@5 billion for post office USPS funding; WH chief of staff: mail sorting machines won’t be removed; Trump false suggests ballot drop boxes could lead to voter fraud; Post office says it will stop removing collection boxes until after election; Trump asks why post office hearing is during RNC and not DNC U.S. intelligence indicates Iran paid bounties to Taliban for targeting American troops in Afghanistan; Trump kicks off multi-day campaign trip to counter DNC; WH announces plans to drill in arctic national wildlife refuge; Trump may hold memorial service for his brother at the WH; South Korea orders thousands of church members tested after outbreak; New Zealand prime minister Jacinda Ardern delays election by 4 weeks over COVID-19; Trump approves emergency declaration for Iowa Derecho; California ravaged by wildfires and record heat wave