Features

• So You Think You Can Dance?: PET Scans Reveal Your Brain's Inner Choreography

  Recent brain-imaging studies reveal some of the complex neural choreography behind our ability to dance

  Steven Brown and Lawrence M. Parsons   | July 1, 2008  | 19

• Hands-On Computing: How Multi-Touch Screens Could Change the Way We Interact with Computers and Each Other

  The iPhone and even wilder interfaces could improve collaboration without a mouse or keyboard

  Stuart F. Brown   | July 1, 2008  | 2

• Rubik's Cube Inspired Puzzles Demonstrate Math's "Simple Groups"

  A new set of puzzles inspired by Rubik's Cube offers puzzle lovers the chance to get acquainted with the secret twists and turns of mathematical entities called sporadic simple groups

  Igor Kriz and Paul Siegel   | July 1, 2008  | 21

• Using Causality to Solve the Puzzle of Quantum Spacetime

  A new approach to the decades-old problem of quantum gravity goes back to basics and shows how the building blocks of space and time pull themselves together

  Jerzy Jurkiewicz , Renate Loll and Jan Ambjorn   | July 1, 2008  | 399

• No-Till: How Farmers Are Saving the Soil by Parking Their Plows

  The age-old practice of turning the soil before planting a new crop is a leading cause of farmland degradation. Many farmers are thus looking to make plowing a thing of the past

  David R. Huggins and John P. Reganold   | July 1, 2008  | 14

• Could Our Own Proteins Be Used to Help Us Fight Cancer?

  Protective heat shock proteins present in every cell have long been known to counteract stress. Newly recognized roles in cancer and immunity make them potential therapeutic allies

  Pramod K. Srivastava   | July 1, 2008  | 3

• The Migration History of Humans: DNA Study Traces Human Origins Across the Continents

  DNA furnishes an ever clearer picture of the multimillennial trek from Africa all the way to the tip of South America

  Gary Stix   | July 1, 2008  | 55