The Moment of History on Instagram: "In 1986, Queen performed their last concert with Freddie Mercury. The show took place at Knebworth House, a private English country estate. The performance was held on August 9th. More than 120,000 people came to see Freddie and hear Queen live. None of the audience knew that they were witnessing Freddie’s final live performance."

NetCreep on Instagram: "On August 14, 1996, Karen Wetterhahn, a brilliant chemistry professor at Dartmouth College, was studying the effects of heavy metals. While transferring a liquid called dimethylmercury, she accidentally spilled one or two drops onto her latex glove. She followed all safety protocols: she immediately took off the gloves and washed her hands. However, at the time, science did not know that dimethylmercury is so permeable that it passes through latex gloves in less than 15 s