Discover strange facts about scorpions: deathstalkers, emperor scorpions, fattail scorpions, and the UV-glowing arachnids whose venom is the most expensive...

Deathstalker venom costs $39 million per gallon and is used in cancer research. Expert guide to the world's most dangerous scorpion and its medical value.

Explore the extraordinary biology of scorpions, from their 435-million-year evolutionary history and UV fluorescence to deadly venom, survival abilities, and groundbreaking medical applications. Expert-written guide covering 2,500+ species, the deathstalker, emperor scorpion, bark scorpion, and the

Everything about the emperor scorpion: size, habitat, diet, venom, UV fluorescence, maternal care, and the strange facts that make Pandinus imperator one of the world's largest and most studied scorpions.

Complete reference on the deathstalker scorpion: venom toxicity, chlorotoxin cancer research, habitat, size, lifespan, and the strange facts that make Leiurus quinquestriatus the world's most medically valuable arachnid.

Complete reference on the Arizona bark scorpion: the only medically significant scorpion in the United States, its venom, the Anascorp antivenom, its urban spread through Phoenix, UV fluorescence, and the grasshopper mouse that eats it alive.

Complete reference on the Indian red scorpion: venom toxicity, prazosin treatment, habitat, size, lifespan, and the strange facts that make Hottentotta tamulus the most medically lethal scorpion on Earth.