We have less than a millisecond left.
You see, the planet we call home has existed for roughly 4.55 billion years. But numbers that large mean almost nothing to me, nor to most people, so I choose to break it down. If we lay the age of the Earth out over a calendar year, that would amount to 518,264 years per hour or 144 years per second. So if we have 10 or 11 years until the point of no return, as climate scientists have repeatedly told us, that means we have a millisecond left before midnight in which to change our society completely to avoid turning the Earth into a piping hot fajita. (If you want to be more generous and instead look at how long modern homosapiens have been walking around, it’s 315,000 years. So if you lay that over a calendar year, we have roughly 15 minutes before the stroke of midnight to combat climate change. Not sure that makes me feel much better.)