WHEN JUNE ALMEIDA peered into her electron microscope in 1964, she saw a round, grey dot covered in tiny spokes. She and her colleagues noted that the pegs formed a halo around the virus—much like the sun’s corona.
What she saw would become known as the coronavirus, and Almeida played a pivotal role in identifying it. That feat was all the more remarkable because the 34-year-old scientist never completed her formal education.