Muons: Emblems of discovery

Violating parity

This doodle pad was used by Columbia University researcher Tsung-Dao (T.D.) Lee during talks with Chen Ning (Frank) Yang, while they were visiting scientists at Brookhaven National Laboratory in the summer of 1956.

Neutralino

Whereas matter on Earth and in stars is made of atoms and nuclei, scientists know that dark matter must be made of something else. Neutralinos are a prime candidate.

Jorge Cham: Piled higher and deeper

Jorge Cham's popular comic strip about the lives of hapless grad students takes him to the Large Hadron Collider—and launches a series of comics that explains the science with remarkable clarity.

A physicist's life: write a little code, mush a few Huskies

First the noses start twitching; then all five sets of ears perk up. Jen Adelman-McCarthy knows something tantalizing lies ahead.

Electronic personalities

Some claim that handwriting can reveal personality traits. Large, free-flowing loops reflect an easy-going nature; squiggly strokes, creativity.

The contraption is just a dirt-dampness detector. Honest.

Marek Zreda and Darin Desilets of the University of Arizona approached airport security with a suitcase full of tubing, cables, electronic devices, and wires. The guard opened it. Lights started blinking.

Jessica Reed: Custodians of the strong force

Result of the week

Behind every big breakthrough is a series of small steps that build on each other to enhance our understanding of the universe. At Fermilab’'s Tevatron Collider, physicists have been telling the unfolding story of their experiments in weekly installments for more than five years.