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


If you're starting a business of your own you'll need to find out how to get a business license to legally operate it. We'll show you how to get a business license.

People often think agnostics and atheists believe the same things. Where do their positions overlap and where do they differ?

Americans didn't always pay income taxes. When did that start and what was behind the creation of the IRS?

For such a simple nursery rhyme, the story behind who wrote it sure is complicated. Even Henry Ford got involved.

While many Americans have seen their tax refunds go down under the new tax laws, we have some strategies to increase your tax refund.

What's the point of meditation? Are all Buddhists vegetarians and pacifists? What do we misunderstand about Karma? Find out more about Buddhism in our article.

Can you name even one female mathematician? Don't worry if you can't. That just means you need to read our article on five famous female mathematicians to up your cred.

There's a magic number that gets casual players (maybe you) really interested.

You might think it's impossible to fit a week's worth of clothes into a carry-on, but with our packing tips, it's a piece of cake.

Taxpayers in the U.S. were accustomed to taking a personal deduction off their taxes for themselves and their dependents. But the tax reform laws have eliminated that. So, will their taxes go up or down?

In good times and bad, dollar stores seem to thrive. But how are they are able to make so much money selling things so cheaply?

Ever had a "woulda, shoulda, coulda" feeling about something? It's called regret. What really triggers this emotion — and can we trust it?

Whether the circle is as big as Planet Mars or as small as a tennis ball, the ratio of its circumference divided by its diameter will always equal pi (3.14). But why?

It's one of those phrases bandied about by a variety of politicians. But what would it mean if the U.S. embraced this health care proposal?

Do you have thousands of photos and emails stored on your devices or in the cloud? If so, you might be a digital hoarder. But is that as bad as being hoarder in real life?

Some Polish scientists created a calculator that can give you the perfect proportions for 14 different international types of pancakes.

Coworking spaces are on a tremendous growth curve. But are they all they're cracked up to be?

An existential crisis is different from anxiety over a really difficult decision or even a case of major depression. It's having the thing that gives your life meaning and structure completely shattered.

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.

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.