When Did Global Warming Start?

Early Signs of Global Warming

While the term “global warming” was not widely used until the late 20th century, early signs of a warming planet can be traced back to the Industrial Revolution in the 18th and 19th centuries.

The Discovery of the Greenhouse Effect

In the late 19th century, scientists began to study the effects of greenhouse gases on the Earth’s climate, laying the foundation for our understanding of how human activities contribute to climate change.

The Rise of Climate Science

Throughout the 20th century, advances in technology and research allowed scientists to better understand the complex interactions between greenhouse gases, the atmosphere, and the Earth’s climate.

The Paris Agreement

In 2015, world leaders came together in Paris to negotiate a historic agreement aimed at combating climate change, setting ambitious goals for reducing greenhouse gas emissions and limiting global temperature rise.


While the exact date when global warming started may be difficult to pinpoint, it is clear that human activities have played a significant role in driving the Earth’s climate to unprecedented levels of warming.