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Emotions make Katy Perry`s songs stand apart

Last Updated: Friday, December 13, 2013, 08:37

Katy Perry believes that the inclusion of emotions in her songs is what makes them different from the rest.

Dinosaurs hot or cold-blooded?

Last Updated: Monday, July 11, 2011, 12:36

A new research has added to the debate about whether dinosaurs were cold-blooded and sluggish or warm-blooded and active.