PT - JOURNAL ARTICLE AU - Potts, Richard TI - Evolution and Climate Variability AID - 10.1126/science.273.5277.922 DP - 1996 Aug 16 TA - Science PG - 922--923 VI - 273 IP - 5277 4099 - http://science.sciencemag.org/content/273/5277/922.short 4100 - http://science.sciencemag.org/content/273/5277/922.full SO - Science1996 Aug 16; 273