Researchers have discovered nearly 500 ancient ceremonial sites in Mexico. They're similar to Aguada Fénix, the largest and oldest Maya monument ever found.

Día de los Muertos is a holiday of mourning that orginated in Mexico and is now celebrated around the world. An expert digs into its history and traditions.

The footprints offer hints of people's real lives 23,000 years ago. "What we see here is also activity of play, and of different ages coming together."

Radiocarbon dating of rabbit and deer bones found in a Mexican cave in the 1960s suggest the first humans arrived in North America about 30,000 years ago.

A monumental building is the oldest and largest in known Maya history, far larger than their later pyramids and palaces.

The search for evidence of the Maya Kingdom Sak Tz'i' has been going since 1994. A roadside vendor flagged down a researcher to offer an amazing clue.

The brown dog tick, which feeds on dogs and people, spreads Rocky Mountain spotted fever. New research clarifies the risk factors in Mexicali, Mexico.

Yucatec Maya farmers breastfeed their babies even longer after c-sections than after vaginal births, research finds.

"Ultimately, they talk about it less and blame themselves more..."

"Either this species is native to Texas, but its presence has simply gone unnoticed until now, or we were exceptionally lucky…"