These are used to trace the history and evolution of technology.

"In this show we're able to trace the evolution of equipment over more than a century."

It would be possible to trace the evolution of first degrees.

You can trace the very evolution of the rose in these old bushes.

Traces the evolution of the area from farmland to an arts center.

We can trace the horizontal evolution of every building and street in Toronto.

There will also be an exhibit tracing the evolution of trains from the 1860's to the present.

One can trace the evolution of the human spirit.

A walk to trace the evolution of a forest.

The program will trace the evolution of the blues from early black work songs to contemporary classics.