1.   The defendant, Leonard Ewing Scott, was convicted of killing his wife, Evelyn, though no physical trace of her was ever found.

2.   The New York artist Barton Lidice Benes deals directly with physical traces of the disease in the context of gay culture.

3.   The radar program seeks to detect the physical traces, briefly left as signatures on water surfaces, of the undersea motions of submarines.

4.   For a catastrophic disaster that leaves few physical traces it ever happened?

5.   Physical traces of the diva are harder to find.