The item is a very short science piece by Itai Navo of the Davidson Institute for Science Education, the educational arm of the Weizmann Institute of Science. Its headline asks, in Hebrew, “What is cobalt?” and describes the subject as a kind of scientific “brainwashing” or hype check.
No factual article text is provided beyond the byline and institutional attribution, so there are no additional substantive details about cobalt, a specific event, date, or findings to report. The source appears to point readers to other quiz or science content, saying in Hebrew that links to previous quizzes are available.
Because the supplied text contains only the headline and author credit, there is no further story development, quoted source, or follow-up described in the material provided.