Remarkably, the Venus flytrap can count to five. Erwin Neher of the Max Planck Institute for Biophysical Chemistry in Göttingen, Germany, and colleagues, recorded electrical impulses from the plant in response to one to 60 touches. Two touches close the trap, but after only five touches the plant starts to make the enzyme that digests its prey, and to increase production of a sodium transporter used to absorb nutrients.