1 Subjects: “...past vegetation...”

2 “... forever the way North Americans view their past. While sneaking into hydroplane races on the Columbia...”

3 “..., with a new introduction reframing the articles in the context of past and present questions...”

4 “... in the past and present. Special emphasis is placed on subjective perception by asking how borders...”

5 “...History is the basis for our interpretation of humanity's past. Indeed, new developments in digital...”