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.


RECENT CONTRIBUTIONS


Some kids have a lot of talent in music, art or math. Then there are those who are gifted beyond belief.

There are many everyday services that health insurance in the U.S. will often not cover. Here are some of them.

What do Donald Trump, Bob Dole and LeBron James have in common? A tendency to talk about themselves in the third person. But is it just egotism or is there a hidden benefit to saying your name rather than "I"?

Today, Martin Luther King is revered for his nonviolent struggle for civil rights in the United States. But most Americans didn't approve of him before his death, or many years after.

Online ordination may be quick and easy and presiding at a friend's wedding may be fun and meaningful. But these marriages haven't always held up in court.

The Scandinavian countries tend to come out on top in the World Happiness Report. But the report doesn't actually ask participants if they're happy. When that question is included, the country rankings are quite different.

'American Exceptionalism' is a slippery term that has been used both positively and negatively. What does it really mean and how did it come to be embraced by both American Democrats and Republicans?

Every week (or every day) there seems to be new poll giving new numbers on how many Americans approve of the president's job performance. But what do these numbers really tell us and when should we take them seriously?

Do you hold your breath when you're driving through a tunnel or keep a lucky rabbit's foot in your car? You're not alone.

How did spring break become a booze-fueled rite of passage for American college students? Can we blame this one on the ancient Greeks?

Some U.S. restaurants' experiments with dropping tipping in favor of higher menu prices did not catch on with consumers. Is there a profit point when it would make sense to drop tipping?

Fighting the funk brought on by an animal decomposing inside your car engine can be hard, but not impossible. Here's how to do it.

A pioneer in the environmental movement, Marjory Stoneman Douglas was a journalist and activist who fought to save these important Florida wetlands from development.

The popularity of neighborhood social networks keeps exploding. But building community comes with some unintended consequences.

Why is it so hard to keep weight off after losing it? One study suggests it's because your body wants you to put it back on.

Leftover pizza is practically a staple in college dorms and bachelor pads, but is it safe to eat at room temperature?

Is there something about American suburban high school culture that makes it fertile ground for school shootings? One researcher says 'yes.'

Britt Marie Hermes started out at a naturopath. Now, she writes a blog criticizing their practices, which has landed her in a lawsuit. At a time when naturopaths are fighting for more state licensing and insurance coverage, she shares her story.

The U.S.'s long-standing cash bail system produces two very different outcomes depending on how much money the defendant can scrape together.

The prosperity gospel is one of the most popular forms of Christianity in the entire world. But where did it come from and how did it get so big? And why do critics say it gives a false picture of Christianity?