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An archaeologist reveals what she learned from sifting through a 200-year-old rat nest recovered from a historic Philadelphia home.

US health care policy will remain fractured until lawmakers address the core question of who is responsible for health care costs.

Federal officials are questioning the safety of the vaccine series children receive. Here's the story of how the childhood vaccine schedule came about.

Two US wars based on lies, in which tens of thousands of American troops and millions of civilians died, offer a cautionary tale about the rush to war.

Eileen Higgins won a hard-fought election to become Miami's new mayor. Now for the hard part - governing the city.

The gas industry is opposed to labels that warn consumers of the potential harms of gas stoves.

Real skeptics study the evidence and ask questions, rather than taking political dogma on faith. Experiencing disasters can open more eyes to the risks.

Wolves and coyotes feed on similar things - but their diets aren't identical. A researcher studied predator diets to investigate their differences.

Unwinding can be hard during the holidays for many reasons. Building in time to recharge through active leisure can help.

The $4 billion school security industry can't back up claims for its tech. The silver lining: That's partly because there aren't enough shootings to study.