Dynamic Directory - February 19, 2019

The story behind designing and building one of America's greatest civil-engineering accomplishments.

It's 107 years since America's largest-recorded avalanche struck the town of Wellington in Washington state.

It starts on 7 March 1965 when a civil rights procession, from Selma to Montgomery, turns violent. MLK gets involved and leads the second attempt (on 9 March 1965). Not until a Court Order is entered do marchers have the right to continue.

As U.S. infantry troops took their positions on the 6th of July, 1944, they were unaware that opposing forces were about to engage in a mass attack, using their own bodies as weapons.

General Saito, commanding Japanese forces on the island of Saipan, believed his troops could not hold the island if they did not have air power over it.

After the war was over, and Robert Leckie returned from his tour of duty in the Pacific, he married Vera Keller.

Thomas Hobbes, a British philosopher who was born in "the philosophy town" of Malmesbury, in 1588 (during the reign of Queen Elizabeth I), believed that if people live "in a state of nature," they would be fearful and prone to violence.

Embedded with American forces on Saipan, W.

Exactly eight months to the day, after Japan bombed Pearl Harbor, 11,000 American Marines land on a Pacific island called Guadalcanal. They are about to commence the first Allied offensive against the Empire of Japan.

This image depicts Philip Johnston visiting members of the Navajo Nation at their hogan.

Robert Leckie and other U.S. Marines fight the Japanese during the Battle of Guadalcanal. It is a fearsome time for such young men.

Lt. General Holland Smith - pictured here, second-from-left and known to the men on Saipan as "Howlin' Mad" - was extremely proud of "my Marines.

As Alan Turing and his Bletchly Park colleagues worked feverishly to break the Enigma code, they caught a break when the Royal Navy captured U-110 on May 9, 1941. Onboard was a working Enigma machine and secret codes for the following month. Initially towing the disabled U-boat to Iceland, the crew with the secret treasure was redirected to Scotland.

Learn the story behind one of the most-famous photos of the U-boat War: The attack of U-569.

On January 6, 1838, Samuel Morse successfully tests an electrical telegraph. So why did it take years longer to send the first message?

Before the Pearl Harbor bombing, Japanese-Americans lived and worked on Terminal Island. After the bombing, their homes were destroyed and their way of life was gone forever.

Ansel Adams, one of America's greatest photographers, started his professional life as a pianist. What made him decide to switch profressions?

Oliver Wendell Holmes is known for some of his free-speech decisions which he wrote while serving as a Supreme Court Justice.

Professor Wiles has won the Abel Prize for solving Fermat's Last Theorem. How long did it take to solve it? How did he do it?