What gas makes up approximately 74 percent of the Sun's mass?

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Which former heavyweight champion was nicknamed the "Brockton blockbuster"?

What is the geographical tern for a ring-shaped coral island?

Which eastern US state is home to the Kittatinny Mountains?

What theorem is used to determine the length of the hypotenuse of a right triangle?

What is the more common term for amblyopia?

What is the brightest star in the night sky?

In what year was nylon first synthesized?

What "g" word do biologists use to describe a group of species with common characteristics?

What never works at night and requires a gnomon to tell the time?

When Forrest Gump was in the army, what sport was he good at?

What British TV series featured Tinky Winky, Dipsy, Laa-Laa, and Po?

What Apache chief rode in Teddy Roosevelt's inaugural parade in 1905?

When did Princess Diana die in a car accident?

What does the name Botswana mean?

Lusaka is the capital of which African country?