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

The US has unveiled a controversial new food pyramid that's causing a stir among nutrition experts. It represents the latest ...

Jason Chun is a CNET writer covering a range of topics in tech, home, wellness, finance and streaming services. He is passionate about language and technology, and has been an avid writer/reader of ...