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Why people don't stop smoking
Photograph of the flea that transmits Yersinia pestis to cause bubonic plague, called the oriental r
In 2008, the U.S. economy suffered a gaping wound as several trillion dollars were ripped out of it.
Luna Park at Coney Island was a vast living theater in which strollers were both spectators and acto
In middle childhood, children are increasingly able to understand other people’s thoughts, ...
Cancer cells can move to new locations in the body, a process called metastasis