the buzz log

Kids love asking their parents "Why?" Searchers, it seems, are no different. Every week, we see dozens of queries on topics ranging from pet behavior to rock band comings and goings. Here are some of last week's most interesting "why" questions in no particular order...

• Why do cats purr? This is a riddle that has plagued humankind for centuries. And, according to the Library of Congress, vets are still somewhat baffled.

• Why do dogs eat grass? Searchers are likely to stumble across this USA Today article that explains that grass is a "normal part of their diet."

• Why are gas prices so high? Ask 100 different people and you're likely to get 100 different answers. Some say speculation, some say manipulation, some just shrug and pay up.

• Why did Steve Perry leave Journey? The iconic singer broke with his band years ago, but fans still wonder why. Wikipedia has an explanation.

Still thirsty for knowledge? Here are a few more random questions that folks are pondering...

• Why is the sky blue?
• Why is Friday the 13th considered unlucky?
• Why is my computer so slow?
• Why is Pluto not a planet anymore?
• Why is the ocean salty?
• Why isn't soccer popular in the US?
• Why are flamingos pink?
• Why did Kobe Bryant change his number?
• Why is proper grammar important?
• Why does your stomach growl?