Colonization of the Galaxy

The colonization of space

Gerard K. O'Neill · Physics Today · 1974 · 212 citations · Full text

Natural Sciences, Environmental Sciences, Environmental Change +6

The Migrations of Human Populations

Kingsley Davis · Scientific American · 1974 · 102 citations

Life Sciences, Biology, Evolutionary Biology +10

The Human Population

Ronald Freedman, Bernard Berelson · Scientific American · 1974 · 28 citations

Interstellar archaeology and the prevalence of intelligence

Jay Reynolds Freeman, M. Lampton · Icarus · 1975 · 24 citations

Humanities, Archaeology, Experimental Archaeology +4