Why do you think nature can't solve NP-hard problems? When you dip a twisted wire with 3D structure into a dish of liquid soap and water, and pull it out and get a soap film, didn't it just solve an NP problem?

Oh no. Ohhhhh no. Not somebody trying to claim that nature solves problems in NP in polynomial time because of bubble shape minimization again!

Like Cyan just said, nature does not solve the NP problem of a global optimal configuration. It just finds a local optimum, which is already known to be computationally easy! Here's a reference list.