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In this edition of Scientific American for March 2003, there are five articles. First, a look at new evidence that dinosaurs had wings and feathers and could fly. Second, digital entertainment jumps the border. Third, a Maine nuclear reactor tackles the problem of what to do when it's time to retire. Fourth, new evidence may help restore aging bones. And, finally, astronomers are closer to a better understanding of dark matter.

In this issue of Scientific American for January 2003: a look into the project to develop the first nanotechnological data storage device for mass production, rebuilding the food pyramid with new evidence that some fats are healthful and many carbohydrates are not, the nose-tickling science of champagne, and, new ways of predicting earthquakes.

This month's edition of Scientific American looks at a new method of exploiting fundamental physics to allow tethers to provider power for space flight. Also in this issue: the future of cereals, virtual reality offers hope to patients living in pain, controversial nuclear bunker busters, and more.

Could endangered species someday not be endangered at all, thanks to cloning? Robert Lanza, Betsy Dresser, and Philip Damiani address that subject in "Cloning Noah's Ark." If sheep, cattle, and lab mice can be cloned..."What About Rover and Fluffy?" Plus, getting to Mars on "The Vasimr Rocket"; supplying "AIDS Drugs for Africa"; and "The Odd Couple and the Bomb." Subscribe and never miss an issue!

In this issue of Scientific American, "The Paradox of the Sun's Hot Corona." Like a boiling tea kettle on top of a cold stove, the sun's hot outer layers sit on a relatively cool surface. And astronomers are figuring out why. Two of them - Bhola Dwivedi and Kenneth J.H. Phillips - explain their findings. Plus, "Solving the Mystery of Flight," "North to Mars!", "Hair: Why it Grows, Why it Stops," and more.

Scientific American presents a collection of key scientific essays written by Nobel Prize winners Albert Einstein, Niels Bohr, I.I. Rabi, and Leon Lederman - never before available in audio! Einstein's essay, "On the Generalized Theory of Gravitation" (1950) is an account of the extension of the generalized theory of relativity. Next are tributes to Einstein upon his death in 1955, written by Niels Bohr and I.I. Rabi. Finally, "The Two Neutrino Experiment" by Leon Lederman.

In this issue of Scientific American for June 2003, a look at self-repairing computers: by embracing the inevitability of system failures, recovery-oriented computing returns service faster. Also in this issue: the connection between arguments against in vitro fertilization and cloning, what's really happening on Mars, why chain letters can explain evolutionary history, and what's to be done about deers dying from a mysterious wasting disease?

In the cover story, we'll hear about the possibility that the space-time continuum is a kind of fluid. Then, we'll hear about the incredible memory of Kim Peek, the inspiration for Rain Man. Also, we'll hear about the negative health effects of poverty, as well as take a look at recent fossil discoveries that cast light on the evolution of four-limbed animals from fish.

In this issue of Scientific American, "You Will Buy This Magazine: Shattering Myths About Hypnosis." Also, the British Flying Saucer Bureau closes up shop, Thomas Sterling investigates "How to Build a Supercomputer," a report on human height hitting its head on the genetic ceiling, halting photons pave the way for quantum computing and desktop black holes, finding snipers by sound, and more.

The dazzling feats of Olympic and professional athletes depend on top-notch performance by their powerfully conditioned muscles. But conditioning can only go so far; recent research suggests that on a biological level, some athletes really are born, not made. Future genetic breakthroughs could change even that. This month's cover story, "Muscles and Genes," addresses the possibilities. Subscribe to this Audible exclusive!

The cover story for Audible Scientific American July 2003 looks at how adaptive antenna arrays can vastly improve wireless communications by connecting mobile users with "virtual wires." Also in this issue: new evidence about how cells turn malignant and how cancer spreads, the cost of over-fishing the world's oceans, filling in clues about the lost Indus Valley civilization, and why heart-lung machines can sometimes leave patients wondering why their memory is failing.

In this month's Audible Scientific American, TV as a drug. Researchers see signs in coach potatoes that mimic what they see among serious addicts. Take a look at Saturn: why does it have rings? And, what is the explanation for the rings being flat, on a single plane? Also, hear about the latest advances that make getting wired a home a whole lot easier.

In this issue of Scientific American for August 2003: new theories about black holes suggest the entire universe may be one big hologram, vapors from the earth may have fueled the Oracle of Delphi's visions, a second look at how the brain's cerebellum works, and more.

There are four articles in this month's issue of Audible Scientific American for December 2002. First, Scientific American looks into the melting of Antarctica and assures us that we don't have to panic just yet. Then, an investigation into the enigma of Huntington's disease. Third, the story behind the bright birth of black holes, and, finally, an evolutionary look at the best diet.

Do you believe in the Loch Ness monster? This month's cover article, "Rulers of the Jurassic Seas" reveals an unusually large, prehistoric animal, a swimming reptile to be exact, that is fascinating for many evolutionary reasons. Plus, "The Secrets of Stardust," "Piecing Together Alzheimer's, " the appeal of gold, and more.

In this April 2004 issue of Scientific American, the cover story takes a look at glial cells and asks the question, "Has Science Missed the Other Half of the Brain?" Then, is it possible that too much choice actually makes people miserable? Barry Schwarz takes a look at what too many options can do. The third article this month looks for hidden members of planetary systems. And, finally, new research on genes may provide clues about evolution.

In this special issue, Scientific American looks at nanotechnology. What is this science of "small" technology and manipulation at the tiniest scale? What promises does it hold for electronics, robotics, and more? How much of it is hype?

In the December issue of Audible Scientific American, the cover story asks, "Does race exist?" Science has the answer, and genetic results may surprise you. The second article sheds light on the lunar surface and how little we know about our own moon. The next article tells the story of the greatest forest fire Mother Nature has ever unleashed. Finally, Audible Scientific American pries open the unseen human genome to examine the mysteries that lay beyond DNA.

In this month's Audible Scientific American, up-to-date reports about the threat of nuclear war in South Asia. Both India and Pakistan have the bomb and the means to deliver it with missles. In this hotbed of political conflict, nukes up the stakes of war dramatically. Want to build chemical weapons? Scientific American says mail order is the way to go, no questions asked. Plus, how the growth of new blood vessels holds promise for heart and cancer patients.

In the cover story, we'll take a look at the curious discrepancies between theory and observations of the "music" of the cosmic microwave background. Then, new fossil evidence reveals that animal life is even older than we thought. Also, we'll hear about new approaches to preventing and treating aneurysms, the challenge of symbolic thinking, and disease-treating antibody-replacements derived from camels.