The CO2 released from burning a new log or an old log makes no difference whatsoever. If you want to plant a tree, it has nothing to do with whether you burned an old or a new log.

Do you know the reason why England set up the Jamestown settlement? Because they wanted to make glass. Why set up a glassmaking operation in America? Because they ran out of trees in England for fuel for the glass furnaces.

A lot of places in the world have been deforested for fuel - and this was before coal. Do you really think biofuels from wood, cow fat, and algae ponds are going to make any difference? It's just a fantasy.