Animal behavior can be deciphered from their droppings as well as their footprints.

No one knows why polio infected some people and not others. No one knows why some polio survivors get post-polio syndrome and some do not. For some people, polio was deadly; others never realized they had polio, recovering from flu-like symptoms in a matter of days.

It’s a blessing to network with people who care about the same things that intrigue me and who have knowledge accumulated over a lifetime.