A solid majority of U.S. Catholics believe that Earth is warming. But climate change is a highly politicized issue that sharply divides American Catholics, like the U.S. public as a whole, mainly along political party lines.

The race, ethnicity and origin categories used in the U.S. decennial census have shifted over time often in a reflection of current politics, science and public attitudes. Our interactive tracks the category names from 1790 to 2010.

For much of its history, America has discussed race in the singular form. But the language of race is changing. Ten multiracial Americans share their views of race, identity, relationships and the future.

The share of American adults who have never been married is at a record high (20%), and young adults are at the leading edge of this national trend.