US federal researchers are blocked from putting certain human cells in animals

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

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

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

Explore Lewis and Clark's 8,000-mile journey in Google Earth.

See a 3D reconstruction of Tenochtitlan, the Aztec capital

The US jobs projected to shrink the fastest over the next decade include typists and word processors.

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

Emanuel Leutze's painting 'Washington Crossing the Delaware' is one of the defining images of the Revolutionary War.

Computer scientists first started trying to optimize dating using computers in the 1950s.

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 US has discontinued a variety of different currency denominations over the years—including a $100K bill.

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

Simulations suggest that a paper airplane launched from the International Space Station would maintain its orientation and gradually descend for 3.5 days before chaotically tumbling down and burning up.

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.

Check out some of the best books that can be read in a single day, with titles from Han Kang, Denis Johnson, Muriel Spark, and more.

Semaglutides, which belong to a class of drugs called GLP-1s, are prescribed for weight loss in combination with diet and exercise because they trigger the release of the appetite-suppressing hormone incretin.

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.

Explore the 2025 Uber Lost & Found Index to find out the weirdest items that passengers left behind in Ubers last year, from ten live lobsters to a mannequin head with human hair.

Explore how temperatures compare to historical averages in cities worldwide with this interactive global monitor.

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.

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

Explore the history, structure, and species of Australia's Great Barrier Reef with this interactive journey narrated by Sir David Attenborough.

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

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.

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

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.

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

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.

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.

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

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

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

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.'

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.

Listen to audio clips from Hoover, a harbor seal named after its insatiable appetite, who learned to say English phrases such as 'hello there' and 'come over here.'

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.

In 1962, the US detonated a nuclear weapon in space, which produced an electromagnetic pulse that disabled three low Earth orbit satellites and damaged electrical equipment in Hawaii.

Lake Sørvágsvatn sits about 32 meters (105 feet) above sea level, but the taller surrounding cliffs create an optical illusion that makes it appear to float much higher above the ocean.

'Golden blood' is the rarest blood type in the world—fewer than 50 people are known to have it.