The behavior of very high energy hadron cross sections, such as for proton-proton scattering, is one of the oldest questions in elementary particle physics. Yet it is only recently that a clear understanding has emerged. This understanding is based on LHC/cosmic ray data and a new analysis revealing that there is a high energy `edge' to the proton. This new recognition permits a solution as to the puzzle of why such high energies are needed, although the only obvious parameter in hadron physics is 1 GeV. It also presents an interesting insight on the coefficient in the Froissart bound.
