Feature
- Physics
A Spin through Space-Time
After 40 years of preparation, satellite Gravity Probe B is scheduled to launch next month and test the prediction that massive bodies, such as Earth, twist space itself as they rotate.
-
- Chemistry
The Nature of Things
An earth scientist's proposed alternative periodic table of elements is emblematic of the growing desire among scientists to recast this 130-year-old chart.
- Math
Best Guess
Economists are exploring the use of betting markets as tools for predicting the consequences of policy decisions by a government, corporation, or other institution.
