Metal Clusters and Magic Numbers

Investigations of tiny lumps of metal can help bridge the gap in physicists' understanding of the differences between isolated atoms and bulk solids

The Case for Relic Life on Mars

A meteorite found in Antarctica offers strong evidence that Mars has had—and may still have—microbial life

Williams Syndrome and the Brain

To gain fresh insights into how the brain is organized, investigators are turning to a little known disorder

Tracking a Dinosaur Attack

The efforts of a sculptor and a paleontologist reveal details of a 100-million-year-old skirmish

Exploiting Zero-Point Energy

Energy fills empty space, but is there a lot to be tapped, as some propound? Probably not

Building the Biggest

The Longest Suspension Bridge

The Akashi Kaikyo Bridge has broken many records and weathered an earthquake-even while it is being completed

The World's Tallest Buildings

Malaysia's Petronas Twin Towers serve as both a cultural and an economic symbol

Building a New Gateway to China

The largest public-works upgrade on earth calls for, among other things, a new airport, two world-class bridges and two submerged crossings of Victoria Harbor

Do we Still Need Skyscrapers?

The Industrial Revolution made skyscrapers possible. The Digital Revolution makes them (almost) obsolete