The city of Tucson, Arizona, sits on America’s southern border, surrounded by the cactus-strewn landscapes of the Sonoran ...

Consider the dramatic geographical and potential climatic changes if the entire continent of South America suddenly vanished.

All maps are influenced by the intent and biases of their creator—even those that are striving to be as accurate as possible.

The Lyrid meteor shower—also known as the April Lyrids—is an annual meteor shower that typically occurs between April 15 and ...

The Lyrid meteor shower—also known as the April Lyrids—is an annual meteor shower that typically occurs between April 15 and 29.

Trump's trade policies are really about technological supremacy, but we need a policy to foster American innovation, not isolationism.

For years, millions of people traveled through Central America north to the United States. Now that flow is changing ...

Founded in 1824, the candymaker Cadbury produces roughly a million chocolate crème eggs a day, year-round, at its factory in ...

California, as the most populous state, had the highest number of adults estimated to be on the autism spectrum, with 701,669 ...