4 ms·We, humans, can jump start a runaway process to reach these pollution levels in a worst case.by zaarn 7y agoWe, humans, can jump start a runaway process to reach these pollution levels in a worst case.adrianN 7y agoThe IPCC is fairly sure we can't (see the Wikipedia link I posted)zaarn 7y agoAnd in the same link, some scientists disagree with the IPCC.