Myth: 3°C of warming is nothing to worry about

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.