Dave Roos

Contributing Writer

Dave is a freelance journalist who has contributed hundreds of articles to HowStuffWorks since 2007. Raised in Pittsburgh, Pennsylvania, Dave attended Duke University where he earned the B.A. in comparative religious studies that has served him so well. Dave began freelancing when he and his wife moved to Mexico in 2003, publishing articles about Mexican food and culture in The New York Times, the Los Angeles Times and Newsweek. Nearly 15 years and three kids later, Dave and his family recently moved back to Mexico and just might stay a while.


As details of the huge tax incentives offered by many states to lure Amazon HQ2 became public, some residents of the rejects wondered if their states dodged a bullet.

Apparently, Kansas is the state whose name is mispronounced.

Her owners nearly tricked her out of freedom in California but the cavalry rode to her rescue. She later became one of the wealthiest and most generous African-Americans in the state.

Whether in person or (worse) by webcam, the office meeting doesn't have to be long, boring and pointless. Not if you implement these five tips.

What was behind the building of possibly the world's shortest border fence?

This beloved holiday celebrates the poet Robert Burns and is full of whisky, readings and a fat juicy haggis.

Many Midwestern and New England states are hoping to attract more residents by offering cash, student loan forgiveness and other incentives. But surprisingly, no one has studied whether these programs are effective.

A new study showed that about 10 percent of Americans who thought they had food allergies actually had food intolerance issues. So what's the difference?

The ambitious project to clean up the Great Pacific Garbage Patch has hit a few snags, but the team, led by a 24-year-old inventor is undaunted.

A new year is always a good time to set new goals. We've come up with five healthy changes that have been scientifically shown to improve your well-being.

Some people were in the wrong place at the wrong time. Others were in the right place, but left at the wrong time. And a few just had bad luck thrust upon them.

Before the 1964 Civil Rights Act and even after it, the tradition of the "great American road trip" was very different for families of color.

On Christmas Eve, Icelandic families traditionally settle down to a cozy night of exchanging gifts of books and reading. It's all part of jólabókaflóð or the Christmas Book Flood.

This is the strange-but-true story of Capt. Sluman Gray, who died at sea and was preserved in barrel of rum. What would become of this soused specimen?

Good luck predicting the economic future; even the experts get it wrong. But there are sure warning signs to look for when a recession is ahead.

The U.S. has a large number of older people who have dementia and are gun owners. And that's a problem.

An inversion of the U.S. Treasury bond yield curve has predicted the last seven U.S. recessions — and it just flipped again.

That old comedian's advice that the "k" sound is always good for a laugh has been proven true, too.

In the Netherlands, children get gifts from St. Nicholas, who's accompanied by his servant Zwarte Pieten (Black Pete), always wearing blackface. Lately some Dutch have been decrying him as racist while others claim it's just part of the culture.

Scientists have discovered the two gene families that play key roles in making fruits and vegetables either round or long. So, could a square fruit be on the horizon?