Who developed the world's first vaccine?

More Questions:

What New York Yankee was nickname the "Iron Horse"?

What month and year was National Geographic magazine first published?

What was the denomination of the first American adhesive stamp?

Which heroine comes from Amphipolis?

Where is Pennsylvania Station?

Tirana is the capital of which European country?

Guadalupe Mountains National Park is located in which US state?

Thunder Bay is located in which country?

A cygnet is the name for a newly hatched or baby what?

What 2 features are longer on a hare than on a rabbit?

Approximately how many inches are in a meter?

Who played Sandy in the made for TV adaptation of Grease Live?

Who was Gordon Shumway?

What war ended at the Battle of San Jacinto?

Who played the male lead role in the film "Clash of the Titans"?