On climate change, humanity is not ‘evil’

Speaking at the United Nations, 16-year-old Swedish activist Greta Thunberg said that if humanity really understands the science of climate change and still fails to act, we’re “evil.” This is because climate change means “people are dying.” Helpfully, she also told us what we must do to act correctly: In a bit more than eight years, we will have exhausted our remaining allowance for carbon emissions, so we must shut down everything running on fossil fuels by 2028.

While this claim is not uncommon, it is fundamentally misguided. Yes, global warming is real and human-caused, but her vision of climate change as the end of the world is unsupported. The UN’s Intergovernmental Panel on Climate Change estimates that by the 2070s, the total effects of climate change, including on ecosystems, will be equivalent to a reduction in average income of 0.2 to 2 per cent. By then, each person on the planet will be 300 to 500 per-cent richer.