A child with a protective suit prepares to work in a virology laboratory at the Science Fair in Prague, the Czech Republic, on May 31, 2024. Organized annually by the Czech Academy of Sciences, the Science Fair offers visitors highlights from the world of natural, technical, social sciences, and humanities. (Photo by Dana Kesnerova/Xinhua)
A boy observes a medium cooled by nitrogen to minus 150 degrees Celsius, which moves along a magnetic track on an air cushion, at the Science Fair in Prague, the Czech Republic, on May 31, 2024. Organized annually by the Czech Academy of Sciences, the Science Fair offers visitors highlights from the world of natural, technical, social sciences, and humanities. (Photo by Dana Kesnerova/Xinhua)
Visitors observe the diversity of rock under microscopes using polarizing radiation at the Science Fair in Prague, the Czech Republic, on May 31, 2024. Organized annually by the Czech Academy of Sciences, the Science Fair offers visitors highlights from the world of natural, technical, social sciences, and humanities. (Photo by Dana Kesnerova/Xinhua)
Children control water jets to fill a container in the middle
of the glass cube at the Science Fair in Prague, the Czech Republic, on May 31, 2024. Organized annually by the Czech Academy of Sciences, the Science Fair offers visitors highlights from the world of natural, technical, social sciences, and humanities. (Photo by Dana Kesnerova/Xinhua)
Visitors look at a robot at the Science Fair in Prague, the Czech Republic, on May 31, 2024. Organized annually by the Czech Academy of Sciences, the Science Fair offers visitors highlights from the world of natural, technical, social sciences, and humanities. (Photo by Dana Kesnerova/Xinhua)
A boy examines invertebrates under a microscope at the Science Fair in Prague, the Czech Republic, on May 31, 2024. Organized annually by the Czech Academy of Sciences, the Science Fair offers visitors highlights from the world of natural, technical, social sciences, and humanities. (Photo by Dana Kesnerova/Xinhua)
A boy with VR glasses watches the virtual world at the Science Fair in Prague, the Czech Republic, on May 31, 2024. Organized annually by the Czech Academy of Sciences, the Science Fair offers visitors highlights from the world of natural, technical, social sciences, and humanities. (Photo by Dana Kesnerova/Xinhua)
A girl processes a block of limestone with a jackhammer at the Science Fair in Prague, the Czech Republic, on May 31, 2024. Organized annually by the Czech Academy of Sciences, the Science Fair offers visitors highlights from the world of natural, technical, social sciences, and humanities. (Photo by Dana Kesnerova/Xinhua)
A boy caresses a sturgeon at the Science Fair in Prague, the Czech Republic, on May 31, 2024. Organized annually by the Czech Academy of Sciences, the Science Fair offers visitors highlights from the world of natural, technical, social sciences, and humanities. (Photo by Dana Kesnerova/Xinhua)