Sam Roe

House Speaker Nancy Pelosi called Tuesday for the ouster of the Bush administration's top consumer products regulator, as Democrats seized on an unusual number of high-profile toy recalls this year...

Photo gallery: Inside a Russian reactor. The U.S. Energy Department is exaggerating its progress in securing tons of nuclear-weapons fuel spread across the globe, a Tribune investigation has found. Among...

After the Sept. 11 attacks, nuclear terrorism suddenly seemed plausible--the new worst-case scenario. Americans wondered whether Osama bin Laden could get his hands on the bomb and whether the U.S....

The specter of nuclear warfare waged by North Korea or Iran has hung over the world in recent months. But beyond that fear and foreboding looms a more far-reaching threat:...

When I was in 5th grade, I brought my fossil collection to school for show and tell. My classmates oohed and aahed as they passed around the ancient trilobites and...

Multimedia: Unleashing the atom, what a nuclear device would do to Chicago, retracing Travelli's quest and more Stories: A threat made in America The search for a magic fuel A...

In the heart of Tehran sits one of Iran's most important nuclear facilities, a dome-shaped building where scientists have conducted secret experiments that could help the country build atomic bombs....