The Apollo program built US space technology and showcased its Cold War dominance

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

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

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.

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

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

Although the moon passes between the sun and Earth each month, its orbit is tilted by five degrees, preventing Earth from experiencing a solar eclipse each month.

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.

Lesser-known phobias include turophobia, or the fear of cheese, and nomophobia, the fear of being without your cell phone.

Explore 3D models of some of the most dangerous viruses, allowing us to understand these and other pathogens in new ways.

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

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

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.

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

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

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.'

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

Explore (and debunk) the world's most contagious misconceptions—from the 5-second rule to sugar rushes—on this interactive site. Click on each misconception for further evidence.

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.

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.

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

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

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

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

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

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

Sea stars are invertebrates—they lack a backbone—and while most exhibit pentametric radial symmetry due to having five arms radiating from a central disk, some can possess more than 40.

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.

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.

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.

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

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

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.

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.

'Tulip mania,' the 1630s Dutch craze where rare bulbs were briefly traded like luxury assets, may have been the first financial bubble—and it still shapes markets today.

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.

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

Watch Dr. Laurence Peter explain his 'Peter Principle,' which states that people are promoted to their level of incompetence and explains why bosses aren't always good at their jobs.

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