title: The big crunch. Birthrates are falling, but it may be a half-century before the number of people--and their impact--reaches a peak.
authors.forename: J
authors.initials: J
authors.lastname: Kluger
mesh_terms: D001723:Birth Rate; D019049:Developed Countries / Q000706:statistics & numerical data; D003906:Developing Countries; D006801:Humans; D011156:Population Density; D011157:Population Dynamics