Love, Sex, and Cyanide—The Private Life of a Toxic Butterfly

Heliconian butterflies choose mates with similar wing patterns. Their genes make them do it.
Geranium

Why Victorian Gardeners Loathed Magenta

For decades, British and American gardeners avoided magenta flowers. The color had associations with the unnatural and the poisonous.
Poison Ivy leaves

How Poison Ivy Works

Where poison ivy comes from, why it gives some people such terrible reactions, and why—unfortunately for hikers and gardeners—its future is bright.
Death Cap Mushroom

California’s Plague of Poisonous Mushrooms

In the last couple of months, fourteen Californians have learned the hard way when they accidentally ate highly poisonous “Death Cap” mushrooms.
Indian Cobra

Venom’s Healing Touch

Venom kills thousands every year, but research is showing that venom can heal as well. Venom works in a way that most drugs can only dream of.

Anthrax: The Bacteria that Lays Diabolical Traps

Anthrax sets self-perpetuating booby traps in order to spread itself, researchers have found.