Senator John McCain says the saber-rattling coming out of North Korea could be a problem. McCain told interviewers on CBS' Face the Nation on Sunday, China could help stop North Korea. “China does hold the key to this problem,” McCain said.

The U.S. Bureau of Land Management (BLM) is investigating the vandalism of an archaeological site just over the Arizona state line near Blythe, Calif. Some of the graffiti at an archaeological site.

Researchers at Arizona State University have worked for years developing a tiny laser invisible to the naked eye. See if you can spot the nanolaser at an ASU engineering lab. Hint: it's 1/100 the width of a human hair.

Arizona is tightening up its rules regarding photo enforcement cameras on roadways. Gov. Jan Brewer signed a law last week requiring cities to prove there’s a legitimate safety need before installing the cameras on state roads.

Drivers who would normally use Interstate 40 east of Flagstaff should postpone their travel plans until weather conditions that closed the highway improve. Strong winds continue to impact Northern Arizona as a Spring storm continues to bring strong winds to the state.

Arizona Senator Jeff Flake says he's taking a 'wait and see' approach to the threat from Gabrielle Giffords' husband, former astronaut Mark Kelly, to challenge him in the next election.  Flake, who was elected to a six-year term last November, joined the filibuster which prevented a vote on the measure to expand background checks on gun sales.

The Veterans Affairs department announced a new effort Friday to clear a backlog of veterans waiting for decisions on their applications for disability benefits to help those veterans who’ve been waiting the longest to get benefits sooner.

Arizona lawmakers voted Wednesday to pave the way for research at state universities that could eventually allow doctors to recommend marijuana to treat more conditions.  The state's medical marijuana law allows it for glaucoma and AIDS and other chronic or debilitating conditions that lead to severe and chronic pain.

The attorney who helped Tucson shooter Jared Loughner avoid the death penalty will now join the team that’s representing the Boston Marathon bomber. A U.S. magistrate has approved the addition of Judy Clarke to the team of lawyers defending Dzhokhar Tsarnaev.