Gravity Probe B verified that rotating objects drag spacetime

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

Peek into the love lives of thousands of strangers whom Stanford University researchers have been tracking since 2017 on this interactive page.

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.'

Abraham Lincoln had to sneak into Washington, DC, in disguise for his 1861 inauguration after a detective uncovered a plot to assassinate him in Baltimore.

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.

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.

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 Aztec Empire ruled over 80,000 square miles of central Mexico for nearly a century—until a small band of Spanish conquistadors brought it down in 1521.

There are up to 100 trillion microbes in the gut, and maintaining the relative balance in this ecosystem is important for our health.

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.

Explore an interactive forecast of the future of the universe, from the return of Halley's Comet to the last light in the cosmos.

Author David Foster Wallace's 'This Is Water' speech provides guidance for adulthood.

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

Robert Smalls escaped slavery by piloting a stolen Confederate ship to freedom, then became an influential Black political leader during Reconstruction.

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

If the moon were less than one-twelfth its current distance from Earth, the planet's tidal forces would overcome the moon's internal gravity, tearing it apart and forming a ring of debris.

Watch an animated visualization of how the Large Hadron Collider works, including how particles are accelerated through a series of machines and how collision data is collected and distributed worldwide.

Light takes approximately eight minutes to travel from the sun's surface to Earth, but it takes thousands of years to reach the star's surface from its core—a distance more than 200 times shorter.

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

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.

The animatronic shark from 'Jaws' was a complex machine called 'Bruce.'

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

Explore an interactive timeline of Earth's 4.5-billion-year history to visualize shifting landmasses and oceans, view the locations of significant asteroid impacts, and learn about major geological and biological events.

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

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

Joan Didion interviewed The Grateful Dead in 1967, before they became music icons.

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

Watch what would happen if you literally had all the money in the world.

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

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

'Bibliotherapy' is of increasing interest as a way to improve mental health and help navigate complex life situations—with people immersing themselves in the experiences of fictional characters or nonfiction and self-help books to find relief and gain personal insights.

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.

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

Between 2002 and 2012, at least 12 people were killed in the Philippines in incidents related to off-key karaoke singing of Frank Sinatra's 'My Way.'

The collapse of gas bubbles in the joint synovial fluid causes 'cracking' knuckles.

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.

Give your memories a place to live and explore the personal stories left by strangers, tied to specific locations, in this interactive map of the world.

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.

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

Cats have a mutation that prevents them from tasting sweetness, and goldfish rank among the world's supertasters.