Rural health care in the United States has evolved, from traveling physicians to technology to reduce health care disparities. But challenges remain.

Presidential power — and the issues of currency, banking and monetary regulation — have been central to America’s political landscape since the nation’s founding. The relationship between presidents ...

Captain America became one of the most popular superheroes during World War II. But after the war, his writers faced a question. What does a patriotic super soldier engineered by the U.S. government ...

Darwin’s ideas are, without question, powerful and have helped advance knowledge in nearly all academic domains. Darwin’s ideas of evolution led to the creation of the field we now call “biology” (see ...