"The climate has already changed" is what I say, when I am frequently asked about climate change. Moisture in the air is up 4%. Average temperatures are up. The ratio of record highs to record lows continues to increase, with record highs being set more than twice as often as record lows over the last decade. Growing seasons have changed by days and weeks. Sea levels are up and rising. The climate has already changed.
And because the concentration of heat trapping gas continues to rise in the atmosphere more change is ahead. Denying current facts and reality is a poor way to prepare for the future.