Extreme humidity and triple-digit temperatures are affecting around 250 million people across the United States. Here's the science behind the heat dome that’s stifling the nation. A sunbather rests ...

Gemstones like precious opal are beautiful to look at and deceivingly complex. As you look at such gems from different angles ...

Des Moines Public Schools is releasing details of its long-awaited Reimagining Education, Reinvigorating Schools plan during its annual State of the Schools address Tuesday morning — which includes ...