My fellow Americans, tonight we're launching an effort which holds the promise of changing the course of human history.

CENTERFORSECURITYPOLICY: Reagan's vision

In the course of human history, the American story is great and unique, one filled with men and women of courage, character, and compassion.

CNN: A history teacher's brilliant idea

Never in the course of human history have we had a greater opportunity to make our people healthier and wiser, to protect our planet from decay and abuse, to reap the benefits of free markets without abandoning the social contract and its concern for the common good.

CNN: Text Of Clinton's Remarks To The United Nations

These are the tools that have most impacted human civilization and helped move the course of history.

FORBES: The 20 Most Important Tools Ever

It's a look at the devices that have most impacted human civilization and helped shape the course of history.

FORBES: Methodology

History usually takes many years to sort out what was important and what was not to the course of human events.

CENTERFORSECURITYPOLICY: War-winning don��ts and do��s