Understanding the distinctions between coffee types

A world-famous barista's primer on coffee appreciation

If you think you can tell good coffee from bad but don’t know how to put the distinction into words, world-famous barista Nicole Battefeld-Montgomery is here to help. Her instructions for breaking down a cup of coffee rivals any sommelier’s wine-tasting guide.

Cultivate your coffee taste with this interactive flavor wheel

Coffee is one of the more complex things humans consume, and taste can vary drastically based on bean genetics, roasting technique, and more. Using this flavor wheel, you can more accurately describe your coffee's aroma by starting from the center and moving outward.

A taxonomy of restaurant types

What's the difference between "fast food" and "fast casual"? Is there any real difference between a "diner" and a "family style restaurant"? This guide from DoorDash explores the industry's fine distinctions, along with some deeper dives into specific enterprises that found success.

Different brewing methods require different grinding methods

With so many brewing methods—AeroPress, Moka Pot, and French press to name a few—knowing the right grind size for your coffee beans is essential. Danish coffee expert Asser Christensen, also known as the Coffee Chronicler, explains how grinding works and recommends the best grind choice for different coffee makers.

The history of coffee

From its likely origins in what is now Ethiopia to today's worldwide consumption, this video uses a map to show how coffee conquered the world. Follow along and see how pilgrimages and centuries of trade influenced the spread of the beverage we all know so well.

Coffee is, indeed, addictive

Caffeine enters the brain through the bloodstream, where it blocks receptors that cause us to feel tired and enables stimulants like dopamine to increase alertness and focus. Over time, the brain begins to expect this level of stimulation, and caffeine addiction can develop. Caffeine withdrawal causes headaches, irritability, and fatigue.

Slow pour-over coffee resists the haste of 'espresso' and commodification of drip

Pour-over coffee involves what its name suggests: slowly pouring hot water from a gooseneck kettle over a funnel of ground coffee, usually requiring at least 3 minutes. This trend developed in the 1970s in opposition to on-demand drip coffee and "espresso," literally invented as an "express" option to save time.

Coffee contains an average of 15mg of caffeine per fluid ounce

Coffee has three times the amount of caffeine contained in most caffeinated sodas, but significantly less than espresso and cocoa powder.

Your DNA may determine whether you like coffee or tea

Whether people prefer coffee or tea may boil down to a matter of taste genetics. People with a version of a gene that increases sensitivity to the bitter flavor of caffeine tend to be coffee drinkers, according to a report. Read on for more.

Why Coke tastes different at McDonald's

Fans of the sugary soda Coca-Cola have noticed significant differences between its canned variety versus what pours forth from the fountain at McDonald's. Is there anything to the claim? Weird History Food takes a dive into this essential fast-food...

What's the difference between an ale and a lager?

The major distinction is that ales are typically fruitier, while lagers are cleaner and crisper. This video breaks down several more of the nuanced differences between the two styles.

Drugs 101: An interactive guide

What's the difference between opioids and psychedelics? This guide details specific drugs and their various associated effects. Drugs in this wheel fall into seven categories: stimulants, depressants, empathogens, psychedelics, dissociatives, cannabinoids, and opioids.

A guide to the unspoken rules of British pubs

Pubs are more ingrained in British culture than in other parts of the world. This guide from CNN walks tourists through a taxonomy of the pub's many types, outlines proper etiquette, and sets realistic expectations. (Beware: Your beer might be warm.)

Understanding the stages of sleep

Do you have trouble keeping the different stages of sleep straight and organized in your mind? Us too. Sometimes it helps to have a straightforward listing of what each stage is and why it’s important. Look no further than this resource from Lumen. It is a basic outline of the four stages of the sleep cycle, along with the brainwaves and attributes that characterize each. If you’re brave enough, test yourself on the built-in quiz!

Exclusionary ads can help win over customers, some marketers argue

Slogans like "if you don't like dark roast, this coffee isn't for you," also known as "dissuasive framing," can entice specific groups of customers, some marketers say. The shift comes from the perceived authenticity of a company admitting that a product is not perfect for everyone.

View a gallery of diagrams for each volcano type with glossaries

The three major types of volcanoes—cinder cone, composite, and shield—each exhibit unique, lesser-known subterranean and surface features, including lava bombs, lahars, and spatter. Other types of volcanoes include lava domes, calderas, fissure volcanoes, and Maars and tuff rings.

How to identify baseball pitches

You might be familiar with terms like "fastball," "curve ball," and "change up," but identifying the specific elements of each pitch type—not to mention what constitutes the more specific types like "splitter" and "cutter"—can leave even passionate fans stumped. This helpful guide to the most used pitches in the big leagues allows you to become a pro in just a few minutes.

A quick guide to rosé wine

What is a rosé? Rosé wines are technically reds, though they’re typically served cold and have more flavor characteristics in common with white wines. This primer explains the basics of the fastest-growing wine category in the US. It covers production and rosé-making regions and styles, along with some common tasting notes for each bottle.

The complexity of classifying a tree

It may seem obvious to us when we see a tree, but very specific characteristics cause scientists to distinguish trees from other types of plants. This video provides a visual and verbal explanation of distinctions that separate trees from other plants like shrubs or herbs. See a scientific breakdown of these traits.

Different types of ice link water molecules together in unique shapes

The ice used to cool drinks—Iₕ—is composed of H₂O molecules arranged in hexagonal structures. This structure forms as ice expands during freezing, providing additional space between molecules, lowering the overall density, and allowing it to float in water. Under sufficient pressure, this spacing can collapse in many ways, creating new forms of ice.

An overview of 12 fundamental types of algorithms and the uses for each

These include search algorithms to quickly process and find important information, cryptographic algorithms to secure communications, randomized algorithms—such as Monte Carlo simulations for estimating probabilities of outcomes—and greedy algorithms, which make optimal choices based on available data in a step-by-step fashion, as seen in navigation apps.

Making sense of the parts of a check

Though individuals use checks sparingly if at all, half of businesses rely heavily on check-writing to pay suppliers and contractors. Get to know the parts of a check with this visual guide.

Here's how the seven types of plastics fare in the recycling process

To help you make better-informed decisions about the products that you buy, here's a simple explanation of the seven different types of plastic, how they differ, and their impact on the environment.

After the Boston Tea Party, colonists switched to coffee, which became the main morning drink for revolutionaries.

Cryptocurrency wallets for beginners

Cryptocurrency wallets come in many types. Here, we present the details, comparing the wallets’ features so that you can choose the best crypto wallet for your needs.

How understanding a balanced diet can help you make good food choices

Eating a balanced diet—which includes a variety of foods from all food groups—is important for optimal health. It is also recommended to avoid ultra-processed foods, such as frozen meals, fast foods, soda, and flavored yogurt. The simplest way...

Browse a detailed visual analysis of over 200,000 similes—comparisons that often use 'like' or 'as'—from popular fiction to see how frequently writers the same idiomatic expressions.

Netflix profits when you're not watching, and its movies are designed that way—read a detail-rich critical essay exposing lesser-known Netflix takes

See how fireworks are made and learn how metals like magnesium and copper are responsible for different colors.

Learn how to read a prospectus, the juicy document that any company must file with the SEC before going public.

Visualize the path of every solar eclipse from 1900 to 2099 and see what each looks like when observed from different locations on Earth.

See how each of the more than two million known species relates to each other—and to common ancestors—in this zoomable tree of life.

Memecoins are a type of cryptocurrency—a form of digital currency with a wide variety of uses—created around popular 'memes,' or viral internet jokes.

Explore an interactive map built from more than 100,000 survey responses on where people find joy in their lives

When you complete a CAPTCHA on a website to prove you are human, you may be unknowingly training algorithms for self-driving cars, whose systems require training data to help identify crosswalks, bicycles, and other outdoor objects.

Use this tool to calculate the dollar value of your parental mental load, from meal planning to coordinating after-school care, then see resources that help generate solutions.

Mid-century modern graphic designers, known for their bright colors and bold lines in advertising, also found success with children's books.

Hear 50 years of iconic hip-hop samples, the genre's foundational looped tracks

Budweiser stores yeast derived from the original 1800s strain in a secret bunker, which only the Head of Yeast Management can access—not even the CEO

While El Niño moves warm Pacific Ocean waters east along the equator, La Niña moves them west, shifting where rainfall will become more common for months.

Doctors differentiate between a phobia and fear by asking patients whether their fear interferes with their day-to-day activities.

The Dracula character, now seen as the vampire archetype, was inspired by a seafood-induced nightmare its creator experienced.

The first steps to rebuilding your credit score include getting to know exactly what's on your credit report and figuring out how far you are from the '700 club,' or 'good score' range.

Studies suggest when you sleep is as important as how much you get, and syncing with your circadian rhythms may lead to less fatigue and improved long-term health outcomes

Explore chaos in this simulation of two double pendulums, where small differences in the release angles produce wildly different outcomes.

Some coin denominations have ridges etched on their sides, partly to prevent counterfeiting, in a practice called 'reeding.'

The United States is one of only around two dozen countries with a fully federal system of government, in which power is divided between national and state governments.

The price of gas is a composite made up of several different factors, with the federal gas tax making up less than 20% of what drivers pay at the pump.

According to the physics of black holes, our 4D reality may be a hologram—a projection of information coded on a 2D surface on the edge of the universe.

See photos of Meteora, a mountainous site in central Greece, home to 14th-century monasteries perched atop soaring outcroppings.