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10,000 BCE
The Younger Dryas Event
The Younger Dryas Event was the earliest known showing of a major climate change. During this event, the Earth temperature raised between 4 and 8 degrees celcius. -
6200 BCE
Cooling Event
A year long cooling event happened in the Northern Hemisphere approximately 8,200 years ago. -
3000 BCE
Cooling Event 2
Another event similar to the previous one occurred in North America about 5000 years ago. -
The Clean Air Act
The clean air act was a law passed that was to help the levels of air pollution in U.S to decrease. -
Study shows ice caps would raise water level
In 1968 there was a study that showed that if the ice caps melted, the Earth water level would rise catastrophically. -
Earth Day
First Earth Day. The first Earth day was the beginning of people recognizing that our Earth is important and needs to be protected. -
Droughts
There were many droughts in Africa, Ukraine, and India, causing worry about climate change. This is when climate change started becoming a major concern. -
Ozone Layer
Warnings about environmental effects of airplanes lead to investigations of gases in the stratosphere and discovery of a danger to the ozone layer. -
Melting Ice
Researchers find that the collapse of West Antarctic ice sheet is irreversible, this will bring meters of sea-level rise over future centuries. This is a major issue that will affect so many in the future. -
Changes Happening
Paris Agreement: nearly all nations pledge to set targets for their own greenhouse gas cuts and to report their progress. This is a step in the right direction and this could help in the future. -
Election
With the 2016 election, Donald Trump became president. Shortly after, he announced that he would remove the U.S from the Paris Agreement -
Current day
Damage from impacts — droughts, floods, tropical cyclones, wildfires, decline of wildlife—is seen sooner and at lower CO2 levels than expected.
Mean global temperature is currently 14.7°C, the warmest it has been in tens of thousands of years. Level of CO2 in the atmosphere is 405 ppm, the highest in millions of years. -
This is my Sources that I used