Scientists in the Fifties were predicting global warming and, despite the fact that there were many more naysayers then, temperatures have been steadily increasing.

As kat says, go out and plant some trees.

When Lou died she wanted trees planted in her memory and most family members planted one. When we scattered her ashes in the mountains I bought 48 bristlecone pine seedlings from the forestry service and we planted them at the same time. That was over ten years ago. I went back there a couple of weeks ago and over half of the pines were thriving.