The Climate State may Tip at 1.5 or 2 C of Global Temperature Rise

These results indicate that climate tipping is an imminent risk in the Earth System. Even the safe operating space of 1.5 or 2.0 degrees above present generally assumed by the IPCC might not be all that safe. According to the precautionary principle, we must consider abrupt and irreversible changes to the climate system as a real risk – at least until we understand these phenomena better.

Shell in 1958 warned about increased carbon emissions from car exhaust

The Guardian: Shell, like other oil companies, had decades to prepare for those consequences after it was forewarned by its own research. In 1958, one of its executives, Charles Jones, presented a paper to the industry’s trade group, the American Petroleum Institute (API), warning about increased carbon emissions from car exhaust. Other research followed through the…