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Montreal Protocol Signed: why it still matters

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Montreal Protocol Signed

Year: 1987

An international treaty designed to protect the ozone layer by phasing out the production of numerous substances responsible for ozone depletion. It was signed on September 16, 1987.

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Signing of the Magna Carta

Year: 1215

A royal charter of rights agreed to by King John of England at Runnymede on June 15, 1215. It is a foundational document for constitutional law in the English-speaking world.

15 6

Gutenberg's Printing Press

Year: 1450

Around 1450, Johannes Gutenberg developed a mechanical movable-type printing press in Europe, sparking the Printing Revolution and the widespread dissemination of knowledge.

Columbus Reaches the Americas

Year: 1492

On October 12, 1492, Christopher Columbus's expedition made landfall in the Americas, initiating a period of European exploration, conquest, and colonization of the "New World."

12 10

Copernican Revolution (Publication of "De revolutionibus")

Year: 1543

Nicolaus Copernicus's "De revolutionibus orbium coelestium" was published shortly before his death, presenting a heliocentric model of the universe that placed the Sun, rather than the Earth, at the center.

Galileo's Telescope Observations

Year: 1609

Galileo Galilei made his first telescopic astronomical observations, discovering the rugged surface of the Moon, the phases of Venus, and the four largest moons of Jupiter.

Newton's Principia Mathematica Published

Year: 1687

Isaac Newton's "Philosophiæ Naturalis Principia Mathematica" was published on July 5, 1687. It formulated the laws of motion and universal gravitation, forming the foundation of classical mechanics.

American Revolution (Declaration of Independence)

Year: 1776

The United States Declaration of Independence was adopted by the Second Continental Congress on July 4, 1776, declaring the thirteen American colonies as a new nation, the United States of America.

4 7

French Revolution (Storming of the Bastille)

Year: 1789

The Storming of the Bastille on July 14, 1789, is considered the flashpoint of the French Revolution, a period of radical social and political upheaval in France.

14 7

Related historic events

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Signing of the Magna Carta
Year: 1215
A royal charter of rights agreed to by King John of England at Runnymede on June 15, 1215. It is a foundational document for constitutional law in the English-speaking world.
Gutenberg's Printing Press
Year: 1450
Around 1450, Johannes Gutenberg developed a mechanical movable-type printing press in Europe, sparking the Printing Revolution and the widespread dissemination of knowledge.
Columbus Reaches the Americas
Year: 1492
On October 12, 1492, Christopher Columbus's expedition made landfall in the Americas, initiating a period of European exploration, conquest, and colonization of the "New World."
Copernican Revolution (Publication of "De revolutionibus")
Year: 1543
Nicolaus Copernicus's "De revolutionibus orbium coelestium" was published shortly before his death, presenting a heliocentric model of the universe that placed the Sun, rather than the Earth, at the center.