A Need for New Warheads?
The U.S. government's proposal to build the first new nuclear warhead in two decades raises a host of questions
Features
Cell Defenses and the Sunshine Vitamin
Scientists now recognize that vitamin D does much more than build strong bones and that many people are not getting enough of it. Is widespread D deficiency contributing to major illnesses?...
Blood Cells for Sale
There's more to blood banking than just bagging blood
The Nuclear Threat
A look at strike capabilities worldwide, and how a bomb would affect single cities and people.
Brilliant Displays
A new technology that mimics the way nature gives bright color to butterfly wings can make cell phone displays clearly legible, even in the sun's glare
Nuclear Weapons in a New World
Countries are altering their nuclear arsenals, prompting the U.S. to refurbish its own warheads
The Science of Doing Good
Information technology, satellite imaging and research carried out in disaster-relief areas have begun to transform humanitarian aid into a more efficient and less haphazard endeavor
Playing Defense against Lou Gehrig's Disease
Researchers have proposed potential therapies for a paralyzing disorder once thought to be untreatable
The Great Cosmic Roller-Coaster Ride
Could cosmic inflation be a sign that our universe is embedded in a far vaster realm
Departments
Climate Change and the Law
First Satellite -- Canine Treachery -- Unlucky Ship
Profit Tears
The Forgotten Code Cracker
Ask the Experts
Can a Cockroach Live without Its Head?
- From the Editor
The Best Defense
- Letters
Letters
- Advances
The Genetics of Politics
Higher Power
Repairs without Rivets
Whatever happened to...?
A Simple Mimic
Rotor in Motor
Dark Riddles
Scared Off Silicone
Updates, November 2007
Red Giant Survival
Explaining Out-of-Body Experiences
Molecules with Antimatter
Cross-Circuiting to Nanotubes
No Monkeying Around
- Forum
Don't Wreck the Mars Program
- Recommended
Reviews
- Skeptic
Weirdonomics and Quirkology
- Perspectives
Build Diplomacy, Not Bombs
- In Brief
Data Points, November 2007
In Brief, November 2007
- Working Knowledge
Two Technologies Shine
