• Current Issue
• Past Issues
• On the Bookshelf
• Science in the News

• About
• Subscribe
• Advertise
• Sigma Xi

January-February 2009 (Volume 97, Number 1)

• "Getting the Most from Energy," by Thomas Casten and Phillip Schewe
• "Healing Heat: Harnessing Infection to Fight Cancer," by Uwe Hobohm
• "Kashmir Valley Megaearthquakes," by Susan Hough, Roger Billham and Ismail Bhat
• "The Bones of Copernicus," by Dennis Danielson

March-April 2009 (Volume 97, Number 2)

• "Real-time Flood Forecasting," by Chintu Lai, Ting-Kuei Tsay, Chen-Chien and I-Ling Wu
• "Knowing When to Stop," by Theodore P. Hill
• "The Long-lived Transistor," by Robert W. Keyes
• "A Cipher to Thomas Jefferson," by Lawren M. Smithline

May-June 2009 (Volume 97, Number 3)

• "The Origin of Life," by James Trefil, Harold Morowitz and Eric Smith
• "Fermi, Pasta, Ulam and the Birth of Experimental Mathematics," by Mason A. Porter, Norman J. Zabusky, Bambi Hu and David K. Campbell
• "The Deprived Human Brain," by Charles A. Nelson III, Elizabeth A. Furtado, Nathan A. Fox and Charles H. Zeanah, Jr.
• "Revisiting the Limits to Growth After Peak Oil," by Charles A. S. Hall and John W. Day, Jr.

July-August 2009 (Volume 97, Number 4)

• "Bubbles and Flow Patterns in Champagne," by Guillaume Polidori, Philippe, Jeandet and Gérard Liger-Belair
• "Human History Written in Stone and Blood," by Zenobia Jacobs and Richard G. Roberts
• "Of Beauty, Sex and Power," by Andrew Gelman and David Weakliem
• "Proteomimicry," by Jerry H. Brown

September-October 2009 (Volume 97, Number 5)

• "Mitochondrial Death Channels," by Keith A. Webster
• "Reconnecting Magnetic Fields," by James Burch and James Drake
• "Taking Measure of Biofuel Limits," Thomas R. Sinclair

November-December 2009 (Volume 97, Number 6)

• "Spitzer's Cold Look at Space," by Michael Werner
• "Harvestmen," by William A. Shear
• "The Other Climate Threat: Transportation," by Andreas Schäfer, Henry D. Jacoby, John B. Heywood and Ian A. Waitz
• "Going with the Floe?" by Stephanie Pfirman, Bruno Tremblay and Charles Fowler