ZAP’S FACTS!
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SCIENCE

How everything around you actually works - light, heat, matter, energy, life.

51 facts
ZAP’S PICK
A cheerful yellow slime mold stretches through a colorful maze, reaching for a piece of cheese at the end.
BIOLOGY

A brainless yellow slime can solve mazes.

Slime mold has no brain, no nerves, no eyes - but it figures out the shortest route to food.

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MORE SCIENCE FACTS

50 facts
A cheerful sun beams down on Earth, while playful waves rise and fall, illustrating the Moon's pull on the oceans.
DID YOU KNOW? The Moon pulls our oceans toward it twice a day. Tides happen because the Moon's gravity tugs water more strongly on the side of Earth nearest it. 2 min read
Colorful cartoon creatures, including a dinosaur and fish, surround a shocked Earth, exploding with vibrant energy and fun…
DID YOU KNOW? Life on Earth has nearly been wiped out five different times. Five mass extinctions have killed off most species - and life keeps coming back. 2 min read
A cheerful boy stands next to a giant cartoon ant, both smiling against a bright yellow polka dot background.
DID YOU KNOW? All the ants on Earth weigh about the same as all the humans. Tiny but countless - ants make up an enormous slice of life on the planet. 2 min read
A cheerful green bacterium with a big smile stands in a vibrant landscape of boiling lava, mountains, and a radiation symbol.
DID YOU KNOW? Some bacteria thrive where almost nothing else can survive. They live in boiling water, acid lakes, the depths of nuclear reactors. 2 min read
A cheerful yellow atom with a smiling face has electrons orbiting around it, and a bright lightning bolt zips by.
DID YOU KNOW? Metals conduct electricity because their electrons are free to roam. In metal atoms, outer electrons aren't tied to any one atom - they drift through the whole structure. 2 min read
A bright yellow lightning bolt strikes the Earth, creating a dramatic explosion with red and orange bursts around the globe.
DID YOU KNOW? Lightning strikes the Earth about 40 times every second. That's roughly 3 to 4 million strikes a day, somewhere on the planet. 2 min read
Earth, with a cheerful face, holds a clock while waving, accompanied by a smiling moon and a bright sun in the background.
DID YOU KNOW? Earth's days are slowly getting longer. The Moon is gradually slowing our rotation. A day will eventually last 47 hours. 2 min read
A colorful mountain with a snowy peak towers over a vibrant landscape, while a bold arrow points upward, symbolizing growth.
DID YOU KNOW? Mount Everest grows about 4 mm taller every year. India is still slowly crashing into Asia, pushing the Himalayas higher. 2 min read
A colorful teardrop shape contains a cartoon Earth with green continents, surrounded by icy mountains and a bright yellow…
DID YOU KNOW? 97% of Earth's water is in the oceans. Only 3% of the planet's water is fresh - and most of that is locked in ice. 2 min read
Earth spins with arrows showing north and south flipping, while a compass points in the opposite direction on a bright…
DID YOU KNOW? Earth's magnetic field flips upside down every few hundred thousand years. North becomes south, south becomes north, and compasses point the opposite way. 2 min read
A colorful map of Pangaea shows all the continents fitting together like a jigsaw puzzle against a bright yellow background.
DID YOU KNOW? All the continents used to be one giant supercontinent. It was called Pangaea - and you can see how it fit together by looking at a map. 2 min read
The smiling Earth and Moon exchange cheerful glances, with playful arrows showing the Moon drifting away from Earth.
DID YOU KNOW? The Moon used to be much closer to Earth - and is slowly drifting away. It's currently moving away from us by about an inch and a half a year. 2 min read
A cheerful cartoon Earth with big eyes and a wide smile waves while walking on yellow polka-dotted ground.
DID YOU KNOW? Earth is 4.5 billion years old. Earth formed around 4.5 billion years ago, right alongside the Sun, from a giant cloud of gas and dust swirling in space. 2 min read
A cheerful red circle character playfully nudges a yellow circle character, who looks surprised as a puff of air escapes.
DID YOU KNOW? Only about 21% of the air is oxygen. Most of what you breathe is nitrogen - and it does almost nothing. 2 min read
Colorful layers of Earth's atmosphere stretch across the sky, with a smiling Earth below and a rocket and planes soaring…
DID YOU KNOW? Earth's atmosphere has five distinct layers. From the ground to the edge of space, it changes character several times. 2 min read
A colorful cartoon Earth shows continents in bright yellow and blue oceans, set against a playful heart-patterned background.
DID YOU KNOW? The continents drift across Earth's surface - about an inch a year. Earth's crust is broken into giant pieces that slide around like puzzle parts. 2 min read
A colorful cross-section of Earth reveals a fiery inner core, glowing like the Sun, surrounded by vibrant land and ocean.
DID YOU KNOW? Earth's inner core is as hot as the surface of the Sun. Right at the center of our planet, it's about 5,500°C - same as a sunny day on the Sun. 2 min read
A vibrant group of tall aspen trees with white bark and green leaves stands above a network of bright red roots spreading…
DID YOU KNOW? The world's largest single living organism is a forest of aspen trees. All 47,000 trees in Pando, Utah, share one giant root system. 2 min read
A cheerful boy in a red shirt with a DNA symbol holds hands with a smiling cartoon banana, both grinning widely.
DID YOU KNOW? Humans and bananas share many of the same basic genes. All life on Earth descends from a common ancestor - and a lot of the basic genetic toolkit got carried forward. 2 min read
A person with a giant cartoon eyeball for a head stands next to two playful octopuses and a quirky spider with multiple eyes.
DID YOU KNOW? Eyes have independently evolved at least 50 different times. From octopus eyes to spider eyes to your eyes - evolution invented eyesight over and over. 2 min read
A cheerful green virus with big eyes and a smile stands among colorful cartoon viruses and a friendly purple squid on a…
DID YOU KNOW? Viruses aren't quite alive - and aren't quite not. They have genes but can't reproduce on their own. They're life's weird middle ground. 2 min read
A cheerful scientist with blonde hair holds scissors, ready to snip a colorful DNA double helix against a bright blue…
DID YOU KNOW? We can now edit DNA like a word processor. CRISPR is a tool that lets scientists snip out one gene and replace it with another. 2 min read
A cheerful yellow ATP molecule with arms and legs strikes a pose, flexing a fist beside a bright lightning bolt.
DID YOU KNOW? Every cell in your body runs on a tiny molecule called ATP. Every living thing on Earth, from plants to animals, relies on ATP for energy, a tiny molecule powering life for billions of years. 2 min read
A cheerful cartoon scene shows a giant tree, two playful monkeys, a blue whale, and a green bacterium with a smiling face.
DID YOU KNOW? Every living thing alive today evolved from earlier forms over billions of years. Slow changes, generation by generation, turned bacteria into whales and ferns into oak trees. 2 min read
A cheerful boy in a red shirt is surrounded by colorful cartoon bacteria, smiling as they float around his outstretched…
DID YOU KNOW? You have more bacterial cells in your body than human cells. There are about 38 trillion bacteria living on and inside you right now. 2 min read
A cheerful sunflower with a smiling face stands in a pot, surrounded by bright sun rays and playful clouds.
DID YOU KNOW? Plants make food out of sunlight and air. Photosynthesis is one of nature's most powerful tricks - and we'd starve without it. 2 min read
A cheerful cartoon character with a DNA double helix for a body holds an open book, smiling against a bright yellow…
DID YOU KNOW? DNA is the instruction manual for building you. A microscopic code, 3 billion letters long, written in every one of your cells. 2 min read
A cheerful red hydrogen atom character with a big smile waves, surrounded by a light blue cloud and a playful yellow…
DID YOU KNOW? The most common element in the universe is hydrogen. About 75% of all the regular matter out there is just hydrogen atoms. 2 min read
A cheerful boy with a blue shirt smiles beside a large black carbon molecule, surrounded by green leaves and a bright red…
DID YOU KNOW? All life on Earth is built from carbon. Carbon atoms link to other atoms in more ways than any other element. 2 min read
A cheerful red blood drop character holds a shiny yellow key, smiling against a bright yellow dotted background.
DID YOU KNOW? Your blood contains enough iron to make a small key. Iron is what makes your blood red - and helps it carry oxygen. 2 min read
A cheerful cartoon boy waves, his body filled with bright blue water, with a large drop of water hovering above him.
DID YOU KNOW? You're about 60% water. An adult human is essentially a walking, talking, leaky water balloon. 2 min read
A colorful periodic table filled with elements stands behind a bubbling green flask, showcasing the magic of chemistry.
DID YOU KNOW? The periodic table has 118 known elements. The periodic table features 118 elements, each essential for building everything from trees to water, all discovered by Dmitri Mendeleev in 1869. 2 min read
A vibrant glass of cola with a straw sits next to a whole lemon and a sliced lemon, with a colorful pH scale above.
DID YOU KNOW? The pH scale runs from 0 to 14 - and most of your favorite drinks are pretty acidic. Coke has a pH of about 2.5 - almost as acidic as lemon juice. 2 min read
A sparkling blue diamond shines next to a bright yellow pencil, showcasing their shared carbon element with playful sparkles.
DID YOU KNOW? Diamond and pencil lead are the exact same element. Both are pure carbon. The atoms are just arranged differently. 2 min read
A cheerful boy in a yellow shirt inhales from a red balloon, grinning as he prepares to speak with a squeaky voice.
DID YOU KNOW? Helium doesn't actually change your voice - it changes how fast sound travels through it. Sound moves three times faster through helium than air, which makes your voice sound squeaky. 2 min read
A cartoon bottle of sodium with flames on top panics while a green chlorine gas cloud frowns over a plate of fries.
DID YOU KNOW? Table salt is made of two poisonous elements. Sodium burns in air. Chlorine is a deadly gas. Together they season your fries. 2 min read
A cheerful water droplet waves at a smiling ice cube, both with big eyes and cartoonish grins on a bright yellow background.
DID YOU KNOW? Water is weird - it gets bigger when it freezes. Almost every other liquid shrinks when it cools. Water grows. 2 min read
A cartoon thermometer with a worried face shows red liquid, while a cheerful sun character stands next to an angry coffee…
DID YOU KNOW? Heat and temperature aren't the same thing. A spark from a sparkler is 1,800°F but won't burn you. A cup of coffee at 180°F will. 2 min read
Two smiling cartoon atoms, one red and one yellow, are connected by a chain, floating against a bright blue dotted…
DID YOU KNOW? Two particles can be linked across any distance. Measure one and you instantly know the other - even if it's on the other side of the universe. 2 min read
A bright red magnet hovers over a coiled orange wire, with a glowing light bulb and lightning bolts bursting around them.
DID YOU KNOW? Electricity and magnetism are two sides of the same force. Move a magnet through a coil of wire and you make electricity. Move electrons in a wire and you make a magnet. 2 min read
A shiny black flashlight beams a vibrant red laser against a bright yellow dotted background, showcasing focused light.
DID YOU KNOW? A laser is just incredibly focused, perfectly synchronized light. Every photon in a laser beam marches in the exact same direction at the exact same wavelength. 2 min read
Glass isn't quite a normal solid - its atoms are scrambled like a liquid's.
DID YOU KNOW? Glass isn't quite a normal solid. Its atoms are scrambled like a liquid's - but frozen in place. Scientists call it an "amorphous solid". 2 min read
Two hands rub together energetically, creating a bright flame above them against a vibrant blue dotted background.
DID YOU KNOW? Friction always creates heat. Rub your hands together and that warmth is energy turning into temperature. 2 min read
A boy in a red shirt pushes against a blue brick wall, surrounded by a comic-style explosion effect to show force.
DID YOU KNOW? For every action, there's an equal and opposite reaction. Push against a wall, and it pushes back with equal force; this is how rockets soar, propelled by the very gases they expel. 2 min read
A cheerful light bulb beams with a smile, flanked by a red particle and a blue wave, both waving happily.
DID YOU KNOW? Light is both a particle AND a wave. Depending on how you measure it, you get a different answer. 2 min read
A cheerful boy in a blue shirt holds a red and blue magnet, lifting a shiny paperclip with excitement against a bright…
DID YOU KNOW? Gravity is the weakest force in the universe. A tiny magnet can pick up a paperclip - beating all of Earth's gravity holding it down. 2 min read
A boy in a yellow shirt shouts at an astronaut in a spacesuit, both surrounded by a colorful, dotted background.
DID YOU KNOW? Sound can't travel through empty space. It needs air, water, or some other substance to push through. 2 min read
A cheerful cartoon light bulb with arms and legs dashes forward, leaving colorful speed lines behind it on a bright yellow…
DID YOU KNOW? Light is the fastest thing in the universe. It travels 186,000 miles per second - and nothing can go faster. 2 min read
A cheerful cartoon banana gives a thumbs up next to a glowing radiation symbol, set against a bright blue background.
DID YOU KNOW? Bananas are slightly radioactive - but totally safe to eat. Scientists use the "banana equivalent dose" as a fun way to compare radiation levels. 2 min read
A bright red kettle steams beside large blue ice cubes and smaller sugar cubes, all set against a sunny yellow background.
DID YOU KNOW? Hot water can freeze faster than cold water - and nobody knows exactly why. It's called the Mpemba effect, and scientists are still arguing about it 60 years later. 2 min read

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