Sometimes, small-sounding numbers can make a big difference.
Consider our human bodies: at 1° or 2°C above a normal temperature, we experience a range of challenging symptoms. A person whose temperature is 40°C (104°F), 3°C higher than normal, is in great danger.
It is highly probable that many of us alive today will see average temperatures rise to 1.5° and 2°C warmer than what used to be normal. We need to be prepared for those worlds and the difficulties they will bring. We can still determine the chances that the terrible, almost certainly unstable levels of 2.5°C and 3°C are reached. We have a limited window in which to use our knowledge and abilities to change the course of the future for good.
So where do I go from here?
We know this can be heavy to hold. It is for us, too.
We know what we need to do, each of us individually and as a society: get to zero. We need to achieve zero emissions as soon as possible. This will require change, imagination, and the courage to do the right thing. The opportunity to be remembered kindly by future generations will not last much longer. If we act now, when they look back and ask what we did, we will all have an answer.
Thank you for taking this journey with us. If you are inspired to keep going, this section outlines some of the ways we grow our knowledge, our way of thinking, and our imagination, in hopes of making a better future more probable.