Almost inseparable in wartime, the two generals split over a vital question: Should revolutionary ideals be imposed on others?
Letters between George Washington and Marquis de Lafayette
The Pinkerton Detective Agency chased down some of America's most notorious criminals
Object Lessons
Icebergs, ice age wolves and honeybee queens
Kennedy Warne, author of "The Amazing Albatrosses," talks about dangerous waters and albatross love
They fly 50 miles per hour. Go years without touching land. Predict the weather. And they're among the world's most endangered birds
A fleet of inventions aims to protect albatrosses from harm
The Tufts University developmental scientist challenges the myth of the troubled adolescent in his new book, "The Good Teen"
Preparing the critically endangered whooping crane for migration could save the flock
Can radar networks eliminate airplane turbulence?
This month's guide to notable American destinations and happenings
Peaceful and prosperous, Southeast Asia's famously uptight nation has let its hair down
A virtual vacation along China's mighty waterway
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