Joel Sartore / Photo Ark / Philippine cylindrical snake (Hologerrhum philippinum) head portrait, UPLB Museum of Natural History, Los Banos, Philippines. Captive.

Philippe Clement / Tourmaline specimen, crystalline boron silicate mineral on white background

Philippe Clement / Quartz specimen with tourmaline, crystalline boron silicate mineral, on white background

Nigel Cattlin / Wilting and necrosis caused by boron deficiency, Bo, on a sugar beet plant in Champagne Region, France, Septrember

Nigel Cattlin / Wilting and necrosis caused by boron deficiency, Bo, on a sugar beet crop in Champagne Region, France, Septrember