Children take part in Bay Area Science Festival Discover Day in San Francisco

By Xinhua Published: Apr 26, 2022 09:29 AM

Children take part in the Bay Area Science Festival Discover Day at Oracle Park in San Francisco, the United States, April 24, 2022.(Photo: Xinhua)

People take part in the Bay Area Science Festival Discover Day at Oracle Park in San Francisco, the United States, April 24, 2022.(Photo: Xinhua)