3°C of warming is nothing to worry about

Myth:

3°C of warming is nothing. It’s less than a third of the difference between summer and winter, so there is nothing to fear from a hotter planet.

Fact:

3°C of warming is very significant at a global level. In fact, the difference between an ice age and the current warm period can be as little as 5°C, although it can also be double that. [The oceans were about 3.5°C cooler during the last ice age.] The planet has not seen such high temperatures for 400,000 years, and certainly not when it had 8 billion people to feed. 

[Source: Image generated using ChatGPT, 2026]

Sources:

“How a 2 C temperature increase could change the planet,” CBC News, 2015. https://www.cbc.ca/news2/interactives/2degrees/

Jonathan Watts, “What happens if the 1.5C target for global heating is missed?” The Guardian, 8/12/23

“What Happens When We Cross the 2°C Temperature Limit?” Climate Adaptation Platform, 20/7/24. https://climateadaptationplatform.com/what-happens-when-we-cross-the-2c-temperature-limit/

Mitota P. Omolere, “What 2C of Warming Will Look Like: A Comprehensive Assessment,” Earth.org, 2/9/24. https://earth.org/what-2c-of-warming-will-look-like-a-comprehensive-assessment/

Devi Sridhar, “What is the real toll of natural and climate disasters? Science has staggering new answers,” The Guardian, 6/12/24

Lindsay Fendt, “Why did the IPCC choose 2° C as the goal for limiting global warming?” MIT Climate Portal, 8/8/25. https://climate.mit.edu/ask-mit/why-did-ipcc-choose-2deg-c-goal-limiting-global-warming