On the border between chemistry and biology, information can flow in both directions. Information from chemistry into biology helps us understand how biological systems work and also furnishes many of the tools needed to explore and understand biology generally. However, there is another aspect in which information from biology flows into chemistry. This inspires new chemistry based on the principles used by Nature, a field that I have named “biomimetic chemistry” (1–4). It mirrors an activity that humans have pursued for a long time: inventing new things inspired by what Nature does.