CNBC's Megan Cassella joins 'Closing Bell Overtime' to tallk the latest from the Federal Reserve. A new report by The New ...

They are each around 40 to 50 centimeters tall. Quokkas are often called “the happiest animal in the world” for their smiling appearance. But they are designated as endangered species.

The story of two of the strangest animals on the planet just got a little stranger, thanks to clues revealed by a lone fossil specimen that scientists now say represents a long-extinct ancestor.