A new simulation shows large amounts of hydrogen in our planet’s core. Scientists report on what they found in 290-million-year-old vomit. Plus, a comedic play and a 20-year neurology study explore ...

What's CODE SWITCH? It's the fearless conversations about race that you've been waiting for. Hosted by journalists of color, our podcast tackles the subject of race with empathy and humor. We explore ...

The Arizona Department of Economic Security is investigating Tucson charity Cross Country Outreach, which the Star has found is violating building, zoning and health codes, and is likely breaking ...