Dave Roos

Contributing Writer

Dave is a freelance journalist who has contributed hundreds of articles to HowStuffWorks since 2007, with a specialty in personal finance, economics and business. Raised in Pittsburgh, Pennsylvania, he 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.


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?

Hell-Cat Maggie, Gallus Mag and Sadie the Goat sure have colorful names. They're alleged to be members of various 19th century New York gangs. But did any of them really exist?

Not only did Alexander rule a territory of three continents, he founded 70 cities and even had Aristotle for a teacher.

As more states are swapping Columbus Day celebrations for Indigenous Peoples' Day observances, does Columbus Day still have any relevancy?

From the beginning, this project was mired in political infighting, lack of funds and construction delays. Sounds familiar? Find out more intriguing facts about the Washington Monument.

Nobel prizes offer lots of prestige and big payouts. But how do you become eligible for one? Can you lobby for yourself?

Galton was a pioneer in meteorology, psychology, statistics, biometrics, forensics and anthropology. But all of that is overshadowed by his promotion of and work on eugenics.

If you've ever felt overwhelmed by the volume of cheese at your local supermarket or cheesemonger, we're here to help you tell the fresh from the stinky and the soft from the hard.

The trail wasn’t the most direct route, but its heart-pounding ascents past other ceremonial sites built suspense for the final reveal — stepping out of the cloud forest to face the fabled mountaintop city.

Rising sea levels, increased flood and extreme heat are all signs of climate change. Cities are trying some innovate strategies to cope with and mitigate these events.

A majority of Americans feel that neither of the two main parties is doing a great job, but they can't agree on what a third party would look like. And that candidate faces enormous hurdles to make the debating stage.

Even if you use the "incognito" setting on your browser, your personal and search data are still being collected at an alarming rate. Private search engines and browsers aim to lessen your digital footprint.

Since Queen Elizabeth received her first corgi at age 7, it's been an 80-plus-year love affair. But not everyone appreciates the breed's "barkiness."

This very famous castle (and the inspiration for Cinderella's castle at Disneyland) was built for just one person, often called Mad King Ludwig. But was he really insane or just slandered by his enemies?

American viewers of the hit "The Great British Baking Show" might be confused by the challenge for "Biscuit Week." We break down how the American biscuit is vastly different from the British version.

Cobalt is associated with the color blue, but it's so needed for rechargeable batteries that the U.S. put it on the list of minerals it can't live without.

Devil's Den was the site of the bloodiest battle of the American Civil War. Not surprisingly, it's rumored to be haunted with the ghosts of many dead soldiers.

It's called the direct primary care model, and doctors who've switched to it say it promises better patient outcomes and less bureaucracy. But not everyone is convinced.

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.

How exactly did these two fried friends get together and become so beloved in the U.K.? Like many a national cuisine, its roots started in faraway lands.