Nicole Yunger Halpern is pursuing a Ph.D. in theoretical physics at Caltech. She blogs for Caltech’s Institute for Quantum Information and Matter.

“Several kinds of hairy mouldy spots”

The book had a sheepskin cover, and mold was growing on the sheepskin. Robert Hooke, a pioneering microbiologist, slid the cover under one of the world’s first microscopes. Mold, he discovered, consists of “nothing else but several kinds of small and variously figur’d Mushroms.” He described the mushrooms in his … Continue reading