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January-February 2001 (Volume 89, Number 1)

• "The Growing Threat of Biological Weapons," by Steven M. Block
• "Superflares and Giant Planets," by Eric P. Rubenstein
• "Vertebrate Biology in Microgravity," by Richard J. Wassersug
• "In Defense of Robert Andrews Millikan," by David Goodstein

March-April 2001 (Volume 89, Number 2)

• "Gene Therapy for Pain," by Jay Yang and Christopher L. Wu
• "Thermoelectric Clathrates," by George S. Nolas and Glen A. Slack
• "Protecting Ourselves from Food," by Paul W. Sherman and Samuel M. Flaxman
• "Biocavity Lasers," by Paul Gourley and Darryl Sasaki
• "Ecology of Transgenic Crops," by Michelle Marvier

May-June 2001 (Volume 89, Number 3)

• "How Were the Comets Made?" by Joseph A. Nuth III
• "Preserving Salmon Biodiversity," by Phillip S. Levin and Michael H. Schiewe
• "Combing Chromosomes," by John Herrick and Aaron Bensimon
• "Probing Gas Hydrate Deposits," by Robert L. Kleinberg and Peter G. Brewer
• "Alfalfa," by Michael P. Russelle

July-August 2001 (Volume 89, Number 4)

• "Protostars," by Thomas Greene
• "Iris Recognition," by John Daugman
• "The MAX Phases: Unique New Carbide and Nitride Materials," by Michel W. Barsoum and Tamer El-Raghy
• "The Nature of Emotions," by Robert Plutchik
• "Science and Uncertainty in Habitat Conservation Planning," by Laura Watchman, Martha Groom and John D. Perrine

September-October 2001 (Volume 89, Number 5)

• "Microspheres, Photonic Atoms and the Physics of Nothing," by Stephen Arnold
• "Pathogens, Host-Cell Invasion and Disease," by Erich Gulbins and Florian Lang
• "Life After Death in the Deep Sea," by Richard A. Lutz, Timothy M. Shank and Robert Evans
• "An Argument for the Cometary Origin of the Biosphere," by Armand H. Delsemme
• "The Shape of the Universe: Ten Possibilities," by Colin Adams and Joey Shapiro

November-December 2001 (Volume 89, Number 6)

• "The Formation and Evolution of the Milky Way," by Cristina Chiappini
• "Spintronics," by Sankar Das Sarma
• "Chaos on the Quantum Scale," by Mason A. Porter, Richard L. Liboff
• "The Challenge of Siphonous Green Algae," by Peter S. Vroom and Celia M. Smith
• "Health and Human Society," by Clyde Hertzman