The graph, formally known as the Mann, Bradley and Hughes reconstruction, showed a relatively flat temperature line for most of the last 1,000 years, followed by a sharp upward spike in the 20th century, resembling the blade of a hockey stick.
This graph provided critical evidence that human activities were the primary driver of global warming, particularly the burning of fossil fuels, which release greenhouses gases into the atmosphere, leading to an increase in global temperatures.
The Hockey Stick graph played a pivotal role in raising awareness about the urgency of addressing climate change and influenced policymakers and the public to take action to mitigate its impacts.
