Declining birthrates occur as economy shifts, attitudes don't

Call it the baby bust. Even as the world's population surpasses 7 billion, some countries are facing significant population declines. Mary Brinton's new research indicates that a complex clash between countries' gender norms ...

Most dog breeds highly inbred

Dog breeds are often recognized for distinctive traits—the short legs of a dachshund, wrinkled face of a pug, spotted coat of a Dalmatian. Unfortunately, the genetics that give various breeds their particular attributes ...

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