Take a look at the latest obesity data from the Centers for Disease Control and Prevention and you can see that the country's obesity epidemic is far from over.

Even in Colorado, the state with the lowest rate, 21.3 percent of its population is obese. Arkansas tops the list with 35.9 percent.

There is a grim kind of math that comes with war.

Most of the troops who died during the wars in Iraq and Afghanistan were flown to Dover Air Force base in Delaware. And for most of the wars, those dignified transfers were off limits to the press. That changed in 2009, when President Obama lifted the media ban and paid a visit to Dover himself.

For the first time in 90 years, U.S. health officials say they have diagnosed a case of the plague that may have spread in the air from one person to another. Don't be alarmed — the plague these days is treatable with antibiotics and is exceptionally rare (just 10 cases were reported nationwide in 2014).

And if the plague has become mostly a curiosity in the United States, this case is more curious than most.

Building a giant steel bale feeder is hard. Try it.

Problem No. 1: Unless you live in ranch country, you probably don't even know what it's supposed to look like — regardless of whether you can build one.

Problem No. 2: Arc welding is involved.

Problem No. 3: Getting it right requires some serious math.