Feb. 28, 2012: Thousands of people turn out for the first day of the Houston Livestock Show and Rodeo. Rachel McNeill reports.
It was 25 years ago that Sinéad O'Connor's "Nothing Compares 2 U" started a four-week run at No. 1 on the Billboard Hot 100 singles chart. In honor of the April 21, 1990, anniversary, check out who else produced the top pop hits of 1990.