Features

• Questions That Plague Physics: A Conversation with Lawrence M. Krauss

  Lawrence M. Krauss speaks about unfinished business

  August 1, 2004  | 2

• Virtual-Reality Therapy

  Patients can get relief from pain or overcome their phobias by immersing themselves in computer-generated worlds

  Hunter G. Hoffman   | August 1, 2004  |

• Nuclear Bunker Buster Bombs

  New burrowing nuclear weapons could destroy subterranean military facilities--but their strategic and tactical utility is questionable

  Michael Levi   | August 1, 2004  |

• Electrodynamic Tethers in Space

  By exploiting fundamental physical laws, tethers may provide low-cost electrical power, drag, thrust, and artificial gravity for spaceflight

  Enrico Lorenzini and Juan Sanmartín   | August 1, 2004  |

• Arsenic Crisis in Bangladesh

  Arsenic in drinking water could severely poison 50 million people worldwide. Strategies being tested in Bangladesh might help prevent the problem

  A. Mushtaque R. Chowdhury   | August 1, 2004  |

• Next Stretch for Plastic Electronics

  Organic semiconductor devices can make more than just bendable displays. They will find use in wearable electronics, chemical sensors, skin for robots and innumerable other applications

  Graham P. Collins   | August 1, 2004  |

• Back to the Future of Cereals

  Genomic studies of the world's major grain crops, together with a technology called marker-assisted breeding, could yield a new green revolution

  Stephen A. Goff and John M. Salmeron   | August 1, 2004  |