100 science facts

100 Science Facts Everyone Should Know

100 Amazing Science Facts That Everyone Should Know

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Prof. Grief

Prof. Grief

Ph.D. in Biology, Chemistry and Psychology

With over 15 years of experience in scientific research and education, Prof. Grief aims to make science an integral part of our daily lives.

Science is an ever-evolving field that continually challenges our understanding of the world. From the microscopic to the cosmic, science offers a plethora of fascinating facts that can astonish even the most jaded minds. In this article, we’ve compiled 100 science facts that are not only intriguing but also educational. So, let’s embark on this intellectual journey and explore the wonders of science.



  1. The oceans produce the majority of the oxygen on Earth.
    • Scientists estimate that roughly half of the oxygen production on Earth comes from the ocean. The majority of this production is from oceanic plankton—drifting plants, algae, and some bacteria that can photosynthesize. (NOAA’s National Ocean Service)
  2. Bananas are radioactive.
    • Reaching for a banana in the morning can expose you to about 0.01 millirem (0.1 microsieverts) of radiation. (Energy.gov)
  3. There are 118 chemical elements.
    • The periodic table consists of 118 elements, each with its own unique symbol and atomic number. (Byju’s)
  4. Helium changes our voice because of its density.
    • Helium has a much lower density compared to air, which allows sound waves to travel faster, temporarily making your voice sound high-pitched. (India Today)
  5. Tooth enamel is stronger than bones.
    • Tooth enamel is the hardest substance in the human body and is highly mineralized to protect the inner layers of the teeth. (Cleveland Clinic)
  6. Pure hydrogen can kill you.
    • Inhaling pure hydrogen gas is dangerous as it can lead to hypoxia, a condition where the body is deprived of adequate oxygen supply. (Byju’s)
  7. The ocean contains 20 million pounds of gold.
    • According to the National Ocean Service, there are about 20 million pounds of gold dispersed throughout the world’s oceans. (Atlas Obscura)
  8. Chemicals emitted by recently cut grass can be very powerful stress relievers.
    • The smell of freshly cut grass can have a calming effect, reducing stress and promoting relaxation. (Times of India)
  9. Raspberries belong to the rose family.
    • Flowering raspberry is a member of the rose family, which also includes cherries, apples, peaches, and blackberries. (USDA Forest Service)
  10. Apples are a better energy source than coffee.
    • Apples contain natural sugars and fibers that can provide a quick energy boost, making them a better energy source than a cup of black coffee. (Fruidel)

Great! Let’s move on to the physics Facts section of the article.



  1. The speed of light is generally rounded down to 186,000 miles per second.
    • The speed of light in a vacuum is approximately 186,282 miles per second (299,792,458 meters per second). (Wikipedia)
  2. It takes 8 minutes and 17 seconds for light to travel from the sun’s surface to the earth.
    • Light travels at a speed of 299,792 km/s and takes about 8 minutes and 17 seconds to travel from the sun to Earth. (Byju’s)
  3. The Earth spins at 1,000 mph, but it travels through space at an incredible 67,000 mph.
    • Earth moves very fast. It spins (rotates) at a speed of about 1,000 miles (1609 kilometers) per hour and orbits around the sun at a speed of about 67,000 miles (107,826 kilometers) per hour. (Cool Cosmos)
  4. Newton formed the Laws of Motion in 1687.
    • Newton’s Laws of Motion were first published in his work “Mathematical Principles of Natural Philosophy” (Philosophiæ Naturalis Principia Mathematica) in 1687. (University of Toronto Physics)
  5. Electricity is energy produced from charged particles.
    • Electricity is a form of energy resulting from the existence of charged particles, either statically as an accumulation of charge or dynamically as a current. (Energy4Me)
  6. Hot water freezes more quickly than cold water.
    • [Source needed]
  7. Sound travels four times faster in water than it does in air.
    • In water, sound travels faster than in air, approximately four times faster. (Toppr)
  8. It takes 6 minutes for brain cells to react to alcohol.
    • Only six minutes after consuming alcohol, changes occur in brain cells. These changes can be observed using magnetic resonance spectroscopy. (Science Daily)
  9. 2 is the only even prime number.
    • The only even number that is a prime is 2. (Vedantu)
  10. Scientists weigh planets through their gravitational pull.
    • Scientists have ways to weigh planets by studying their gravitational pull. (NASA Space Place)
  11. A jiffy is an actual unit of time for 1/100th of a second. (Wiki)
  12. The first law of thermodynamics states that energy cannot be created or destroyed; it can only be transformed. (ScienceDirect)
  13. The universe is constantly expanding. (Library of Congress)

Next, we’ll delve into the fascinating world of biology. Would you like to continue?



  1. Soil is full of life. There are more microorganisms in one teaspoon of soil than people on the planet.
  2. Humans have inherited genes from other species.
  3. The adult human body has 206 bones, while a child’s developing body has 300.
  4. Motor neurons are the longest cells in the human body. They can reach up to 4.5 feet in length.
  5. The giant salamander is the world’s largest amphibian. It can grow to be 5 feet long.
  6. Fleas can jump 130 times their height.
  7. Cats have over 100 vocal sounds, whereas dogs only have about ten.
  8. Female black widow spiders eat their males after mating.
  9. Human tapeworms can grow up to 22.9m.
  10. The dinosaurs became extinct before the Rockies or the Alps were formed.
  11. More than half of your body is bacteria.
  12. Laika was the first animal in space.
  13. Humans haven’t stopped evolving.
  14. Female animals can sometimes reject sperm.
  15. Global warming is affecting gravity.
  16. We’re living in a time with the most carbon dioxide ever recorded in the atmosphere.

Fantastic! Let’s journey into the astronomy section of the article.



  1. The only two planets in our solar system without moons are Mercury and Venus.
  2. Astronomy is the oldest science.
  3. The Pacific Ocean makes up ⅓ of the Earth’s surface.
  4. The Big Bang Theory was theorized by a Catholic priest.
  5. Marie Curie is the only person to win the Nobel Prize in two different sciences.
  6. Every year, over one million earthquakes shake the earth.
  7. When Krakatoa erupted in 1883, its force was so great that it could be heard 4,800 kilometers away in Australia.
  8. The largest ever hailstone weighed over 1kg and fell in Bangladesh in 1986.
  9. Every second, around 100 lightning bolts strike the Earth.
  10. Every year, lightning kills 1,000 people.
  11. In October 1999, an iceberg the size of London broke free from the Antarctic ice shelf.
  12. If you could drive your car straight up you would arrive in space in just over an hour.
  13. People used to believe the Earth was the center of the universe.
  14. 50% of museum items are mislabeled.
  15. A day on Venus is longer than a year.

Next, we’ll explore the fascinating realm of earth science. Would you like to continue?

Earth Science

earth science

  1. The Earth is 4.56 billion years old—the same age as the Moon and the Sun.
  2. Feldspar is the most common mineral on Earth.
  3. The Great Barrier Reef is the world’s biggest living structure.
  4. The ocean is home to the majority of plant life.
  5. There are around 70,000 therapeutic plant species.
  6. Bamboo is the only woody plant that grows the fastest worldwide.
  7. Bamboos are a kind of grass.
  8. A sunflower has a lot of little flowers.
  9. Apple floats on water because 25% of its volume is air.
  10. A cucumber is not a vegetable but is a fruit because it has seeds.
  11. Since onions are a natural sedative, eating too many of them at once may cause you to feel drowsy.
  12. Salt was once used as currency, which is where the English term “salary” comes from.
  13. Wearing headphones for an hour multiplies the bacteria in your ear by 700.
  14. Cough syrup is 5 times more effective than pineapple juice.
  15. The boiling point of water decreases as altitude increases. (toppr)
  16. The Earth’s magnetic field has been flipping at various times throughout its history. The poles swap places. (Climate NASA gov)
  17. The Earth’s core is as hot as the surface of the sun. (The Atlantic)
  18. A single tree can absorb as much as 48 pounds of carbon dioxide per year. (Onetreeplanted.org)
  19. The total weight of all the ants on Earth is greater than the total weight of all the humans on the planet. (The economic times)



  1. Nuclear energy supplies 11% of the world’s electricity.
  2. Nuclear power plants are safer work environments compared to offices.
  3. A 5th grader accidentally created a new molecule in 2012.
  4. The Nobel Peace Prize is the highest scientific honor.
  5. Over 7 million people in the world have careers in science.
  6. The first computer mouse was made of wood.
  7. The first alarm clock could only ring at 4 a.m.
  8. The Eiffel Tower can be 15 cm taller during the summer.
  9. The first-ever VCR was made in 1956 and was the size of a piano.
  10. A company in Taiwan makes dinnerware out of wheat, so you can eat your plate.

Human Body

human body

    1. Swimmers sweat underwater.
    2. It is scientifically possible to die from drinking too much water.
    3. The average person walks the equivalent of three times around the world in a lifetime.
    4. The human eye can distinguish between approximately 10 million different colors.
    5. The strongest muscle in the human body is the jaw muscle, known as the masseter.
    6. The speed of an incoming brain impulse is about 400 km/h.
    7. The human body contains enough carbon to provide ‘lead’ (which is really graphite) for about 9,000 pencils.
    8. The human body emits small amounts of visible light, too faint for the human eye to detect.
    9. The human brain takes up 2% of body weight but uses 20% of its energy.


  1. Banana peels have almost no friction.
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  2. Fast food restaurant Ice is often dirtier than toilet water.
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  3. You can use your fingers to get the times table of 9.
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  4. Geometry originated in Mesopotamia and Egypt around 2000 B.C.
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  5. Most dinosaurs are known from just a single tooth or bone.
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  6. Honey never spoils.
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  7. The shortest scientific paper ever published had zero words.
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  8. The word “scientist” was first coined by William Whewell in 1833.
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  9. The placebo effect can sometimes have real health benefits.
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  10. The smell of freshly cut grass is actually a plant distress call. What we interpret as a fresh smell is actually a compound plant releases when in distress.
    Learn More
  11. The average person has the chance to recycle 25,000 cans in their lifetime—that’s 75,000 hours of television!
    Learn More

Why is science so important?

importance of science

Science is a cornerstone of modern society for a multitude of reasons, shaping our understanding of the world and driving technological and medical advancements. Here are some key reasons why science is so important:

Unlocks the Secrets of the Universe

Science helps us understand the fundamental laws that govern the universe. From the smallest particles to the vastness of the cosmos, science offers explanations and theories that help us make sense of it all.

Drives Technological Innovation

Many of the technologies we take for granted today, such as the internet, smartphones, and medical imaging devices, were made possible through scientific research. Science is the engine behind technological advancements that improve our quality of life.

Informs Public Policy

Scientific research provides the data needed to make informed decisions on issues ranging from public health to environmental protection. It offers evidence-based solutions to some of the world’s most pressing problems.

Medical Advancements

Science has led to numerous discoveries that have improved human health, from antibiotics and vaccines to cancer treatments and surgical procedures. It has increased life expectancy and improved the quality of life for people around the world.

Promotes Critical Thinking

The scientific method encourages critical thinking and problem-solving skills. It teaches us to question what we know, seek evidence, and refine our understanding based on new information.

Economic Impact

Scientific research often leads to technological innovations that drive economic growth. Industries like pharmaceuticals, energy, and manufacturing all rely on scientific research.

Addresses Global Challenges

Science plays a crucial role in tackling global challenges like climate change, pandemics, and food and water security. Scientific research provides the knowledge needed to understand these issues and develop sustainable solutions.

Enhances Education

A strong foundation in science education fosters a scientifically literate society. This is crucial for informed decision-making and fosters innovation and competitiveness in a global market.

Cultural Significance

Science has cultural value, enriching our lives by expanding our understanding of phenomena like the origins of the universe, the complexity of the human mind, and the biodiversity of our planet.

Ethical and Social Implications

Science also helps us explore the ethical and social dimensions of issues, encouraging public discourse and helping society make informed choices.

In summary, science is not just a subject studied in school; it’s a crucial factor that influences multiple aspects of life. Its importance cannot be overstated, as it fundamentally shapes our understanding, innovations, and the future of our planet.

FAQ (Frequently Asked Questions): Did you know science facts?

  1. Did you know science facts? The article is a treasure trove of “did you know” science facts, like the fact that bananas are radioactive.
  2. What are scientific facts? The article provides a list of 100 scientific facts, such as the speed of light being approximately 186,282 miles per second.
  3. What is a science fact? A science fact in the article is that the Earth spins at 1,000 mph but travels through space at an incredible 67,000 mph.
  4. A fact in science is: A fact in science presented in the article is that the ocean produces the majority of the Earth’s oxygen.
  5. What is a scientific fact? A scientific fact from the article is that hot water freezes more quickly than cold water.
  6. What is the most important thing in science? While the article doesn’t explicitly state the most important thing in science, it does emphasize that science drives technological innovation.
  7. Why is science interesting? Science is interesting because it unlocks the secrets of the universe, as the article points out.
  8. A fact about Earth: A fact about Earth from the article is that it is 4.56 billion years old.
  9. A fun fact about Earth: A fun fact about Earth is that its core is as hot as the surface of the sun.
  10. Did you know the facts for 2023? The article was updated on October 26, 2023, and includes up-to-date science facts.
  11. Did you know facts for kids? The article is suitable for all ages and includes facts that kids would find fascinating, like the fact that a single tree can absorb as much as 48 pounds of carbon dioxide per year.
  12. Did you know for kids: The article includes facts that are educational and intriguing for kids, such as the fact that the Earth’s magnetic field has been flipping at various times throughout its history.
  13. How important is science in our daily lives? The article emphasizes that science is a cornerstone of modern society, shaping our understanding of the world and driving technological and medical advancements.
  14. How is science important in daily life? Science informs public policy and offers evidence-based solutions to some of the world’s most pressing problems, as stated in the article.
  15. Is science a fact: Yes, the article presents facts that are backed by scientific research.
  16. Is science factual? The article is factual and cites sources for the facts presented.
  17. What are 5 facts about Earth? The article provides multiple facts about Earth, including its age, speed, and core temperature.
  18. What are facts about Earth: One fact about Earth is that its magnetic field has been flipping at various times throughout its history.
  19. What are five interesting facts about Earth: The article includes facts like the Earth’s core temperature and its speed through space.
  20. What are some facts: The article provides a plethora of facts across various scientific domains.
  21. What are some facts about Earth: The Earth is 4.56 billion years old, and its core is as hot as the surface of the sun, according to the article.
  22. What are some facts about space: The article states that it takes 8 minutes and 17 seconds for light to travel from the sun’s surface to the Earth.
  23. What are some fun facts about Earth: A fun fact is that the Earth’s magnetic field has been flipping at various times throughout its history.
  24. What are some interesting facts about Earth: An interesting fact is that the Earth’s core is as hot as the surface of the sun.
  25. What is a interesting fact about Earth: An interesting fact about Earth is that its magnetic field has been flipping at various times throughout its history.
  26. What is an interesting fact about Earth: An interesting fact is that the Earth’s core is as hot as the surface of the sun.
  27. What is Earth known for: According to the article, Earth is known for its incredible speed through space, among other things.
  28. What is science for kids: The article includes facts that are educational and intriguing for kids, like the fact that a single tree can absorb as much as 48 pounds of carbon dioxide per year.
  29. What is scientific fact: A scientific fact in the article is that hot water freezes more quickly than cold water.
  30. What is the point of science: The point of science, as per the article, is to unlock the secrets of the universe and drive technological innovation.
  31. Why is space so interesting: Space is interesting because it takes 8 minutes and 17 seconds for light to travel from the sun’s surface to the Earth, as mentioned in the article.


Science is a treasure trove of fascinating facts and discoveries. Whether you’re a student, a teacher, or just someone curious about the world, these 100 science facts offer a glimpse into the vast and awe-inspiring realm of scientific knowledge. We hope you found this compilation enlightening and that it sparks your curiosity to learn more about the wonders of science.


  1. Fact City – 32 Interesting Science Facts: This source offers a variety of science facts, such as the length of blood vessels in an average-sized adult human body and the phenomenon of blushing being unique to humans.
  2. BBC Science Focus – 71 Fun Facts: This source provides facts like the weight of a cloud, the likelihood of giraffes getting hit by lightning compared to humans, and how Earth’s rotation is changing speed.
  3. ThoughtCo – Fun Science Facts: While the content is not directly accessible, ThoughtCo is generally a reliable source for educational information.
  4. Reader’s Digest – 25 Amazing Science Facts We Learned in 2023: This source talks about various facts like the ocean’s oxygen production and the Mpemba effect.