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4th millennium BC, the wooden cartwheel is first used

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4th millennium BC, the wooden cartwheel is first used

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The invention of the wheel changed the way people lived. It allowed people to travel faster and easier.

Fun fact: The wooden cartwheel was originally used by potters to help shape clay.

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The Bronze Age brought great advancements to the world. Tools and weapons were made stronger and more durable and the population increased because farming and hunting became more efficient.
Fun fact: The Bronze Age was when people first started using metal.

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When the Iron Age began, people started making weapons out of stronger metals like iron or steel. This helped lead civilizations to more permanent settlements. The Iron Age was after both the Stone age and Bronze age, meaning it was the last technological and cultural stage in the sequence.

Fun fact: The iron wasn’t just used for weapons, it was also used for things like cooking pots or horse harnesses!

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400 BC, Democritus suggests the world is made up of atoms

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400 BC, Democritus suggests the world is made up of atoms

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Democritus was the central figure in the development of the atomic theory of the universe. He theorized that not only humans, but everything was made up of small atoms.

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1543, Nicholas Copernicus shows planets orbiting the sun

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1543, Nicholas Copernicus shows planets orbiting the sun

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Copernicus’ theory is most significant because it changed the way people used physics to understand the universe. With this theory, he proved that the earth rotating was the cause for day and night and the changing of seasons.

Fun fact:  Copernicus’ theory took more than a century to become widely accepted.

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Galileo was able to look at the moon, discover many things about space like the four satellites of Jupiter or verify the phases of Venus. The telescope also helped prove Copernicus theory that the planets revolve around the sun.

Fun fact: Galileo didn’t actually invent the telescope, but was the first person to improve it and use it to view space.

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1628, William Harvey shows that the heart pumps blood around the body

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1628, William Harvey shows that the heart pumps blood around the body

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William Harvey proved that the theory that the body consumed blood was incorrect. He tested on actual hearts and bodies until discovering all the blood was pumped by the heart.

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Newton's discovery laid the foundation for our current understanding of physics and the universe. Gravity keeps the planets rotating and keeps all objects and things on earth held down to the surface.

Fun fact: It is believed that he came up with his theory of gravity after watching an apple fall from a tree.

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1796, Edward Jenner vaccination against smallpox

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1796, Edward Jenner vaccination against smallpox

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Jenners’ vaccination against smallpox led to the eradication of the illness and the development of many more life saving vaccines.

Fun fact: Edward Jenner’s vaccination against smallpox was the first ever vaccination.

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1859, Charles Darwin publishes theory of evolution

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1859, Charles Darwin publishes theory of evolution

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Darwin's theory brought the adaptations of organisms into the realm of science. This theory showed the origins of humans, our relationships with other living things and the variation among different groups of people.

Fun fact: It took Charles Darwin 20 years to write and publish his theory.

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1878, Thomas Edison invents the electric lightbulb

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1878, Thomas Edison invents the electric lightbulb

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Edison's invention of the lightbulb allowed safe travel in the dark, work days extended into night and is one of the most convenient inventions.

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With this discovery, Marie Curie found out that radium destroyed diseased cells faster than healthy cells and that radium could be used to treat tumors.

Fun fact: Marie Curie discovered not one element, but two. She discovered radium and polonium.

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1923, Frederick Banting produces and patents insulin

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1923, Frederick Banting produces and patents insulin

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Frederick Bantings’ discovery of insulin allowed millions of people around the world to extend their lives by decades.

Fun fact: He was the first Canadian to win a nobel prize and the youngest recipient at that time.

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1953, Watson and Crick discover DNA structure

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1953, Watson and Crick discover DNA structure

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The discovery of DNA structure has helped lots in the medical field. It has helped diagnose diseases that run in your genes, diagnose genetic disorders, etc.

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1960, Birth control pill becomes available

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1960, Birth control pill becomes available

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The birth control pill offered women a somewhat safe and easy way to prevent pregnancy. But that isn’t the only thing this pill helps with. The birth control pill has other benefits like reducing acne, helping regulate periods, and easing menstrual cramps.