Avian physiological ecology: old questions, new systems and new approaches

Physiological ecology of cerrado plants: new insights and new approaches

Transgenic animals in hypertension research. New approaches to old questions.

Techniques for introducing eukaryotic DNA sequences into the genomes of fertilized mammalian embryos have been available for more than 10 years. The production of transgenic animals (primarily mice) from these embryos has provided a valuable tool for the study of molecular, cellular, and whole animal physiology in the recipient. The power of the technique derives from the fact that the expressi...

Connectionism, Artificial Life, and Dynamical Systems: New approaches to old questions

Periodically in science there arrive on the scene what appear to be dramatically new theoretical frameworks (what the philosopher of science Thomas Kuhn has called “paradigm shifts”). Characteristic of such changes in perspective is the recasting of old problems in new terms. By altering the conceptual vocabulary we use to think about problems, we may discover solutions which were obscured by p...

New Answers to Old Questions

I use cross-cultural ethnographic data to explore the relationship between male and female subsistence labor among hunter-gatherer populations by examining data regarding resource procurement, time allocation, and task differentiation between the sexes relative to dependence on hunted foods. The findings indicate that female foragers generally perform a variety of nonsubsistence collection acti...

Memory: Old questions, new perspectives

Studies with targeted mouse mutants are helping to clarify our understanding of cellular mechanisms that underlie memory. Now this approach is also providing tools for resolving controversies about cognitive processes in memory that have perplexed behavioral scientists for many years.