Trivial Tuesday, Answers

I guess Laura B. wins Trivial Tuesday by getting one answer correct.  What were the rest of the answers?  Here they are along with their questions.

On April 20, 1912, two baseball parks opened in the US.  What were they?
Tiger Stadium and Fenway Park 

On April 20, 1902, Marie and Pierre Curie refined this compound.  What was it?
Radium Chloride 

On April 20, 1862, this pair completed the first pasteurization tests.  Name them.
Louis Pasteur and Claude Bernard 

On April 20, 1985, the ATF raided the compound of this extremist group.  Who was it?
The Covenant, the Sword and the Arm of the Lord

On April 20, 2008, she became the first woman to win an Indy Car race.  Name her?
Danica Patrick 

There you go, the answers.  How many of these did you know now that you've seen the answers?  Have a good weekend.