Science fiction is the literature of our times, the fuel of our imaginations and the source of our favorite imaginary worlds. But what do we mean when we talk about “science fiction?” Here are some of ...

A recent list of top science fiction films had some unusual choices and left out some well-regarded classics. But, says Quentin Cooper, that’s part of the problem – sci-fi is such a broad church it’s ...

Re “Anthropology a Science? Statement Deepens a Rift” (news article, Dec. 10): From my perspective as editor in chief of American Anthropologist, the flagship journal of the American Anthropological ...

As life-preserving medical technology advanced in the second half of the 20th century, doctors and families were faced with a thorny decision, one with weighty legal and moral implications: How should ...

Astronomers are proposing a new, more quantitative definition of what makes a planet. The new definition looks more directly at the object's mass — but it would still leave Pluto out of the running.