Engineering and Science, Volume 75:3, Fall 2012

Table of Contents

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From the President

Random Walk
Wordy Worms • Not-So-Noisy Jets • Einstein’s Journeys • And More

The Fight of the Century By Katie Neith
Biologists at Caltech seek to deliver a knockout in the battle against HIV, one of the worst epidemics in the history of the world.

Decision Making 2012 By Marcus Y. Woo
As Election Day approaches, what factors are you weighing while you ponder your vote? That’s the question Caltech’s economists and political scientists — and even its psychologists and neuroscientists — are asking.

I Can See (More) Clearly Now By Kimm Fesenmaier
The air we breathe today would be very different if not for the work of Caltech’s environmental scientists—work that has led policy makers to adopt everything from the original Clean Air Act to controls on factory and vehicle emissions.

Alumni Impact By Katharine Gammon
At any given time, tens of dozens of satellites hover 22,236 miles over Earth’s equator, moving in sync with the planet and serving as the workhorses of the communications industry. And it’s all thanks to Harold Rosen, MS ’48, PhD ’51.

Obituaries
Hardy C. Martel

Endnotes We asked alumni...