The tree of life.
 If, say, ten very large fig trees were felled, how much carbon would be released?  In terms of carbon sink, what if a suitable financial penalty became attached to felling a tree? And cost cutting is debated.  There's no time to lose.
After felling, if the timber were put to a noble use to build or furnish, for instance, the new art gallery, then the carbon would remain sequestrated and we could forever admire, feel good and rejoice over the trees that grew in Laman Street.