Noise level of ambulance siren, in decibels, from 10 feet:
120
Hours medical students spend in emergency medicine rotations:
136
Hours within which a victim should receive care after a stroke:
3
Duration, in hours, of a paramedic's shift:
24
Average number of calls per shift:
7
Pages microfilmed as part of the Hoover Institution's Communist Party archives project:
10,900,000
Cost, in cents, of microfilming one page:
25
Shelf space, in feet, occupied by original documents:
4,360
Height, in feet, of Hoover Tower:
285
Length, in miles, of microfilm:
227
Lisa Manning
Years since the advent of agriculture:
10,000
Rate at which agriculture spread, in kilometers per year:
1
Years since light-colored skin evolved in some humans due to Northern European climate:
5,000
Number of chromosomes, human:
46
Number of chromosomes, fruit fly:
8
Sources: 1. Hoover Institution; 2. Division of Emergency Medicine; Palo Alto Fire Department; Federal Signal Corp.; 3. The History and Geography of Human Genes; Luca Cavalli-Sforza; Statistical Genomics: Linkage, Mapping, and QTL Analysis.
