What element did Pierre and Marie Curie discover in 1898?

More Questions:

What is the practice of women taking more than one husband is called?

Which country were the 1900 Olympic Games held in?

What is the fourth letter of the Greek alphabet?

Nepetalactone is the active ingredient in what pet product?

The organization PETA stands for "People for" what?

What famous person was the book editor at Doubleday from 1978 to 1994?

Thomas Harris created what character?

What modern country includes the ancient region of Mesopotamia?

What is the main currency on the island of Oahu?

What is the state capital of Alaska?

Gregory Peck played Lt. Joe Clemons in what 1950s film?

What is Lady Gaga's full name?

What year did the band Human League release an album titled "Dare"?

Who became Yusuf Islam in 1977?

Graham Kerr became famous under what nickname?