Stress affects different animals in different, but useful, ways

This interactive website features nearly 40,000 photos from Wikipedia for you to create visual mosaics with.

You may be better at spotting a lie when listening to a speaker's voice inflections rather than watching for facial and body cues.

If a source of music traveled past someone at twice the speed of sound, assuming sufficiently sensitive hearing and powerful equipment, they would hear the music backward.

Male pattern baldness accounts for more than 95% of hair loss in men and is characterized by thinning hair, hair loss, and a receding hairline.

Fecal transplants can help treat infections by transplanting healthy gut bacteria from a donor into a patient's gastrointestinal tract using samples of human waste, which are turned into a liquid mixture and often delivered via a colonoscopy procedure.

Plato's famous allegory of the cave is a metaphor exploring the value of truth over ignorance.

On planets in systems with two stars, such as the fictional Tatooine from 'Star Wars,' observers would see overlapping rainbows and double rainbows.

Metamorphosis evolved over millions of years as species that hatched as smaller versions of adults started exhibiting genetic mutations that differentiated juvenile and adult bodies.

Streaming service Netflix's sound logo 'Tudum' was designed as a key sonic differentiator.

The world's largest waterfall is in the ocean and is more than three times the height of Angel Falls, the largest waterfall on land.

See where your state ranked in an analysis of the best public school systems in the US.

As part of the up to 15 pounds of seafood they consume daily, sea otters eat urchins that feed on kelp forests—sources of shelter and food to over 800 species—thereby making the marine mammal a keystone species.

Watch President John F. Kennedy's speech on going to the moon

Find out how important you are to AI tools when they generate text responses with this tool, which estimates the weights of people's names.

The average banana produces one positron—the antimatter counterpart to an electron—every 75 minutes as its trace amounts of radioactive potassium decay.

A dog's nose can be up to 100,000 times more sensitive than a human's, and each possesses a secondary organ for smelling, which helps learn about other dogs when they sniff each other's butts.

Watch a breakdown of the canine family tree that explains how foxes and wolves are related to our beloved household pets, like poodles and dachshunds.

See a breakdown of how some of the most common food items are traded across the globe, including the key trade relationships for each item.

Located on Ross Island in Antarctica, Mount Erebus is the southernmost active volcano on Earth and features a lava lake—one of eight known worldwide as of 2026—that erupts regularly.

Here are some tips from Pew Research to help you distinguish between a good poll and an unreliable one.

Explore a detailed map of Odysseus' fictional journey from 'The Odyssey.'

Experience a century of America's healthcare advances with this medical visualization, tracing a sampling of healthcare innovations from head to toe.

Play the role of a student as you try to navigate college and remain debt-free.

Apeirophobia is the fear of everlasting life and may stem from the human brain's inability to conceptualize the concept of anything happening beyond what it can project out, such as the concept of an infinite life.

Watch the many different civilizations around the Mediterranean shift power from the year 2500 BCE to 0 BCE in this animated map.

On a cruise ship, the average person uses about 50 gallons of water a day, which is treated by bacteria and onboard filtration systems, then stored until the ship can legally discharge the wastewater.

The tallest tsunami in recorded history was 524 meters (1,720 feet) high—taller than the Empire State Building—and occurred in Lituya Bay, Alaska, in 1958 after an earthquake dislodged a rockface into the water.

Explore how the most commonly used words in the English language have changed from the 1950s to 2023.

Humans tend to imagine aliens as humanlike, but that's probably unlikely. Three different hypothetical planets show how aliens' bodies could take many forms.

Examine this captivating animation 'building' a human—illustrating the roughly 40 weeks of fetal development.

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.

Watch Bruce Springsteen's 1985 performance of Woody Guthrie's 'This Land Is Your Land,' which he calls 'the greatest song ever written about America.'

Explore the history of American restaurants through an archive of menus dating back to the early 1800s.

Watch 4-plus decades of Pixar's opening logos.

The final shots of the Civil War were fired in the Arctic over 2 months after the South's surrender.

Watch a two-year time-lapse of a pinecone seed transforming into a pine tree.

Humans may have as many as 100,000 to 150,000 individual hairs on our scalps, growing at a rate of roughly 1 centimeter per month.

Experience 14 billion years of important moments in world history with this scrollable interactive timeline.

All rainbows are 'raincircles' caused by water droplets separating white sunlight into a spectrum of colors, but Earth's surface blocks the bottom half of the circle from our line of sight.

Relax to a livestream of brown bears chilling in Katmai National Park in Alaska.