Even if I flunked one grading period of my high school Chemistry and even if Science is a subject I don't particularly have a strong affection with, I know what global warming is. It is partly caused by human activities. We released too much greenhouse gases---carbon dioxide and methane are some examples---into the atmosphere, so that they form a kind of blanket that traps the heat that entered the planet instead of being bounced back out of the planet.
There is no panacea to global warming, but the most common, one that has in fact done by many people in many places, is to plant trees. For, trees sequester carbon.
I've done tree planting before, and I could tell it's exhausting.
But to those who want to help Mother Earth but have no time to go out and plant trees, one can blog. Yes, in lieu of planting is blogging.