What is a plant defense?

Have you ever wondered why chopping onions makes you cry, or why hot peppers make your mouth feel like it's on fire? It turns out, plants are secretly genius chemical warriors! Because plants are stuck in the dirt and can't run away from hungry animals, they had to evolve some of the most mind-blowing defense mechanisms on Earth! Join Mira and Finn on an action-packed botany adventure as we uncover the invisible weapons hiding inside your favorite vegetables and forest plants. Discover how chili peppers use a spicy chemical called capsaicin to trick mammal brains, and why birds can eat the hottest peppers in the world without feeling a single tingle! We'll explore how cutting an onion sets off a microscopic tear-gas booby trap, and zoom in on the stinging nettle plant, which is covered in thousands of razor-sharp, microscopic glass needles! Plus, prepare to have your mind completely blown by the African acacia tree—a plant so smart it releases invisible warning gas into the air to tell neighboring trees to pump their leaves full of poison! Tap play to discover the wild, hidden battles happening in your garden right now!