# data[].attributes.headline
1450:                                                                          Johann Gutenberg invents printing press

# data[].attributes.subject
1450:                                                                          Johann Gutenberg invents printing press

# data[].attributes.body
The invention of the printing press. This is important because it helped to share large amounts of information quickly. It allowed ideas to spread, increased literacy, and grew the printing industry.

# data[].attributes.headline
1543: Nicholas Copernicus shows planets orbiting the sun

# data[].attributes.subject
1543: Nicholas Copernicus shows planets orbiting the sun

# data[].attributes.body
Copernicus proposed that Earth and the other planets revolve around the sun, the heliocentric theory, and that the Earth spins on an axis. This was important because it better explains the seasons and because before this everyone thought the Earth was the center of the universe.

# data[].attributes.headline
1628: William Harvey shows that the heart pumps blood around the body

# data[].attributes.subject
1628: William Harvey shows that the heart pumps blood around the body

# data[].attributes.body
Harvey proved that blood flows around the human body and it is pumped through a system of arteries and veins. This is important because it proved that the theory that blood consumed blood was incorrect.

# data[].attributes.body
Newton was the first person to discover gravity. This is important because it proves that all objects are subject to gravity, and that gravity keeps the planets rotating around the sun and affects the flow of rivers and tides.

# data[].attributes.body
Halley's theory was that the comet orbited the sun and it passed by Earth around every 76 years. This is important because it was the first time astronomers understood that comets could pass by the Earth multiple times.

# data[].attributes.headline
1796: Edward Jenner vaccinates against smallpox

# data[].attributes.subject
1796: Edward Jenner vaccinates against smallpox

# data[].attributes.body
Jenner invented a smallpox vaccine. This is important because it saved the lives of so many people and led to the end of smallpox. It also inspired the development of many more important vaccines.

# data[].attributes.body
Nobel was the first to invent dynamite. It is important because it helped a lot in mining and construction, as it was a quicker and simpler way to destroy rock. It helped with building things like roads, tunnels, canals, and other construction projects. Dynamite also inspired weapons like bombs and cannons used in wars.

# data[].attributes.attachment_link.keywords[]
Boats and boating--Equipment and supplies

# data[].attributes.headline
1859: Charles Darwin publishes theory on evolution

# data[].attributes.subject
1859: Charles Darwin publishes theory on evolution

# data[].attributes.body
Darwin's theory of evolution is about how species evolve and change over time. It is important because it helped give a better understanding of humans and life in general.

# data[].attributes.headline
1880: Thomas Edison invents electric lightbulb

# data[].attributes.subject
1880: Thomas Edison invents electric lightbulb

# data[].attributes.body
Edison first invented the lightbulb. This was important because it allowed us to be active after dark, to work longer, to travel/navigate safely, etc. It also helped the industrial revolution because miners had a steady light source that was not at risk of exploding.

# data[].attributes.body
Marie Curie discovered radium. This is important because it was found that radium destroyed diseases cells faster than healthy ones, so it could be used to treat tumors. It has numerous medical applications, including a treatment for cancer.

# data[].attributes.headline
1905: Albert Einstein discovers theory of relativity

# data[].attributes.subject
1905: Albert Einstein discovers theory of relativity

# data[].attributes.body
Einstein's theory of relativity is about time and space. It is important because it had a huge impact on the field of physics, and it helped to better understand space and time.

# data[].attributes.headline
1923: Frederick Banting produces and patents insulin

# data[].attributes.subject
1923: Frederick Banting produces and patents insulin

# data[].attributes.body
Insulin was patented and released to the world for anyone who needed it. This is important because before this those with diabetes did not live for long, since doctors were unable to much more than give the patients a few extra years. It saved the lives of millions.

# data[].attributes.headline
1950: Birth control pill becomes available

# data[].attributes.subject
1950: Birth control pill becomes available

# data[].attributes.body
The birth control pill was released. This is important because it gave women much more freedom and reproductive autonomy. It led to people starting to get married later, and babies starting to arrive later.

# data[].attributes.headline
1953: Watson and Crick discover DNA structure

# data[].attributes.subject
1953: Watson and Crick discover DNA structure

# data[].attributes.body
The discovery of DNA structure. This is important because it helped to diagnose genetic disorders, create new drugs, and helped scientists study genes.

# data[].attributes.headline
2021: James Webb Space Telescope launches

# data[].attributes.subject
2021: James Webb Space Telescope launches

# data[].attributes.body
The launch of the James Webb Space Telescope. This is important because it will grow our understanding of space, and will help us find out if planets orbiting other stars could support life.