—L. Krasner in Philly
—J. Creuzot in Dallas
—M. Moriarty in Minneapolis
—L. Conover in Tucson
—S. Descano in Fairfax (VA)
—R. Fatehi in Norfolk (VA)
—S. Morales in Portsmouth (VA)
—P. Dehghani-Tafti in Arlington (VA)
www.scientificamerican.com/article/coul...