Former Boeing director and ex-Trump administration official Nikki Haley, who is running for U.S. president, has called for U.S. businesses to exit China.
San Francisco International Airport has joined a Centers for Disease Control pilot program testing wastewater samples from international flights for COVID-19.
Eight of the top 10 busiest airports in the world in 2021 were in the US, data published by ACI World has found, with Atlanta Hartsfield-Jackson retaking top spot.