The Sorkheh deposit in northwestern Iran exhibits several readily visible general characteristics of sediment-hosted stratiform copper (SSC) mineralization. It consists of fine-grained disseminated base-metal sulfides within gray sandstones (gray beds, the basal whitish Miocene sandstone and shallow-water) that overlie a thick sequence of red beds (Miocene Upper Red Formation). The host gray be...

AIM (a) To determine the spatial distributions and levels of major and minor elements, as well as heavy metals, in water, sediment, and biota (plant and fish) in Al-Hammar Marsh, southern Iraq, and ultimately to supply more comprehensive information for policy-makers to manage the contaminants input into the marsh so that their concentrations do not reach toxic levels. (b) to characterize the s...

The fourth Wisconsin Symposium on Human Biology took place in Madison, Wisconsin, May 22–25, 2006, under beautiful Spring weather (which typically precedes the less enjoyable long, hot, humid Wisconsin summer). This symposium is held once every two or three years (the previous meetingwas in 2003) and the series is shapingupas oneof the most ambitious—and interesting—of multidisciplinary symposi...

During evolution, mutations produce new lineages that gradually diverge in sequence and regulatory properties. Related strains or species can hybridize to produce viable offspring. Hybrids often outperform their parents, producing more biomass or growing more rapidly. This superior performance, termed heterosis, contrasts the more expected clash between the genomes, and has puzzled geneticists ...

Reading in the Brain (Les neurones de la lecture, 2007) examined the origins of human reading abilities in the light of contemporary cognitive neuroscience. It argued that reading acquisition, in all cultures, recycles preexisting cortical circuits dedicated to invariant visual recognition, and that the organization of these circuits imposes strong constraints on the invention and cultural evol...

(2906) Salsola coquimbana Molina, Sag. Stor. Nat. Chili: 161, 350. 12–31 Oct 1782 [Angiosp.: Chenopod. / Amaranth.], nom. rej. prop. Typus: non designatus. Molina (Sag. 1782) was described from the coast of Coquimbo (Chile) by a brief diagnosis (“Salsola (Coquimbana) fruticosa, caul. aphyllis, cal. succulentis diaphanis”) with observations on use plant Chilean natives. This name has recently be...

References1. Moret Y, Schmid-Hempel P (2000) Survivalfor immunity: The price of immune systemactivation for bumblebee workers. Science 290:1166–1168.2. Scrimshaw NS, SanGiovanni JP (1997)Synergism of nutrition, infection, andimmunity: An overview. Am J Clin Nutr 66:464S–477S.3. Ambrus JL Sr, Ambrus JL Jr (2004) Nutritionand infectious diseases in developi...

S (alphabetical order) Francine Abe '03 and Sara Miller '03 Shryril O’Steen, Biology Sex and Survival: An Evolutionary Approach to the Study of the Guppy, Poecilia Reticulata Trinidad guppies, Poecilia reticulata, are used as a model system to study the process of evolution because their unique natural environment has allowed variable traits to evolve in separate populations of high and low pre...