During his career as a broadcast journalist, “Uncle Walter,” as Cronkite was affectionately known, was identified in public opinion polls as the most trusted man in America. He was managing editor and anchorman of The CBS Evening News with Walter Cronkite for almost 20 years and covered the first televised US presidential election, the 1969 moon landing, and the assassination of US President John F. Kennedy. In 1981, he signed off for the last time with what famous phrase? Discuss
Source: The Free Dictionary
Costello was an American comedian who, along with Bud Abbott, formed the comedic duo of Abbott and Costello. From 1931 to 1957, Costello played a bumbling, cheery dimwit alongside Abbott’s “straight man” in various stage, radio, and TV routines, the most famous of which was their “Who’s on First?” skit. Regarded as the archetypal team of burlesque comedy, the pair starred in movies such as Buck Privates and Abbott & Costello Meet Frankenstein. Why did the two eventually part ways? 
Though few authorities include Amblypoda in modern classifications, scientists once defined it as a group of extinct, herbivorous mammals common to North America during the Tertiary period. Once considered a suborder of primitive ungulates, or hoofed mammals, experts have since concluded that members do not share a common ancestor. They do agree, however, that the group’s members had very small brain cavities relative to their mass. From what physical characteristic is the group’s name derived? 
Prior to the advent of trucking in the early 1900s, rail was the only efficient way to transport goods over land. However, before the 1870s, there was no easy way to quickly stop the extremely heavy freight trains. Brakemen scrambled over the tops of moving cars to activate hand brakes on each one. The system was unreliable, resulting in frequent derailments, and many brakemen were killed or maimed after falling from trains. The air brake solved all of those problems. How did it work? 
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Pyle was an American illustrator and writer who specialized in tales of chivalry and adventure for children. He rewrote and realistically illustrated classic tales about figures like Robin Hood and King Arthur, adapting the stories to suit a younger audience. In 1900, he founded an art school, and many of his students went on to become famous illustrators themselves. Today, he is considered the father of American illustration. Which noted Post-Impressionist painter was an admirer of Pyle’s work? 
The massive 1883 eruption of the volcanic island of Krakatoa in Indonesia ejected more than 6 cu mi (25 cu km) of rock and ash, destroyed the island, and left more than 36,000 people dead. The eruption’s explosive power was about 13,000 times greater than that of the atomic bomb dropped on Hiroshima, and the sound of the explosion, believed to be the loudest sound in recorded history, was heard some 3,000 mi (4,828 km) away. What was the only living thing researchers found on the island in 1884?