"Facial expressions are a universal language of emotion, instantly conveying happiness, sadness, anger, fear, and much more.

According to Drake Baer, "Within moments of meeting people, you decide all sorts of things about them, from status to intelligence to promiscuity.

"In honor of National Etiquette Week and our just-published list of the 45 best restaurants in America, we decided to clear up some common etiquette questions," writes Megan Willett.

See Damon Nofar's slideshow - 8 Tips for an Awesome PowerPoint Presentation - at BusinessInsider.

Take this quiz to see if you have the knowledge to travel like a pro.

Haiku Deck gives their picks for "Decks of the Year.

"Public speaking is hard enough without shooting yourself in the foot with simple mistakes.

Ben Schott (photo, left) presents his ten words.

Only one author team is writing about mobile business communication: Bovee and Thill.

"Some studies say you've only got 15 seconds to grab an audience's attention, while others say it's closer to a minute," writes Richard Feloni of BusinessInsider.

"Launching a product is hard to do," says Drake Baer of BusinessInsider.

According to Richard Feloni, "Once you finish your written speech or PowerPoint slides, you're only halfway done preparing a great presentation.

According to Melia Robinson (photo, left), "It's the cheapest, most low-tech life hack you'll find.

"Here are 11 email etiquette rules you should always follow at work.

According to Richard Felloni of BusinessInsider.

"This article takes a look at the rise of visual content - and why 2014 will be the year of visuals.

This website lists investment banks by type and provides contact details.

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This resource is no longer available.

Explore Google’s efforts to reduce its energy usage and minimize its impact on the environment.

This interactive map shows trade flows between cities in Canada, Mexico, and the United States.

Explore the overall U.

"Almost everyone is terrible at multitasking.

"Culled from Architizer's second annual A+ Awards, which are chosen by 300 experts and a popular vote, these are a handful of the most amazing office spaces in the world," writes Drake Baer in a piece at BusinessInsider.

"In her new book "The Essentials Of Business Etiquette," Barbara Pachter (photo, left) writes about the specific skills professionals need to understand when presenting themselves in a business setting," writes Vivian Giang.