In what year was first concrete bridge George Constantinescu born: 1872, 1874, 1881 or 1882?

After the San Francisco earthquake and fire of 1906, architect Julia Morgan was called upon to rebuild the interior of which San Francisco hotel?

Who was Madonna married to from 1985-1989?

What are the first names of thumbs-up movie critics Siskel and Ebert?

Can you name the two sisters who have newspaper columns in hundreds of newspapers throughout the English speaking world?

Which game is played on a marked board divided into two halves, each side containing 12 alternately colored points?

This African-American botanist and agricultural chemist developed hundreds of uses for peanuts, soybeans, and sweet potatoes. Who was he?