Summary: Simple text and photographs present the names and characteristics of different kinds of cactus, including the pincushion, prickly pear, and barrel cactus.
Why did Gandhi hate iodine (I, 53)? How did radium (Ra, 88) nearly ruin Marie Curie's reputation? And why is gallium (Ga, 31) the go-to element for laboratory pranksters?* The periodic table is …