When was the first climate change warning given by scientists?
Quick Answer
Scientists warned about greenhouse warming as early as the late 19th century. Svante Arrhenius published a major calculation in 1896 linking carbon dioxide increases to higher temperatures.
The Full Story
One of the earliest major scientific warnings about human-caused warming came in 1896, when Swedish scientist Svante Arrhenius calculated that rising carbon dioxide could warm the planet. His work built on earlier studies of the greenhouse effect and showed that atmospheric gases could influence Earth’s temperature. Although his estimates were rough by modern standards, the idea was remarkably prescient. It helped lay the foundation for modern climate science and later global warming research.
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