The Ecology of Early Food Production in Mesopotamia: Prehistoric farmers and herders exploited a series of adjacent but contrasting climatic zones.

ARTICLES The Ecology of Early Food Production in Mesopotamia: K. V. Flannery Prehistoric farmers and herders exploited a series of adjacent but contrasting climatic zones. Crystallization and Molecular Folding: P. H. Lindenmeyer The properties of high polymers are very sensitive to the way molecules fold during crystallization. Meteorites and the Moon: H. C. Urey ...................................... Cosmic-ray ages and contaminants provide evidence that meteorites may come from the moon.