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.

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.

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

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

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.

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

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

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

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

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

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

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

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.

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.

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

Stonehenge was built using giant wooden rollers and precisely carved tongue-and-groove joints to lock the stones in place.

This short animation shows how human beings managed to lug 30-ton stones over miles of prehistoric English countryside and stand them up The Stone Age engineering involved using giant wooden rollers and carving precisely interlocking tongue-and-groove joints to hold the heavy stones in place.

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

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.

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.

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.

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

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

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

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

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.

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

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.

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

'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.

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

George Lucas used Joseph Campbell's 'hero's journey,' a narrative structure that encompasses the common characteristics of multiple cultures' mythologies, to revise 'Star Wars.'

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.

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

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.

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

Watch footage from the moments the Titanic wreck was discovered by a joint US-French research team in 1985.

'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.

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

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.

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.'