However, over the land, there is another effect that we think about - carbon released from plants and soils.

Is there something else that I could do instead to offset the carbon released by flying?

In many cases, the carbon released by that activity has been given a starring role as the killer.

The carbon released from the tree will have a different δ13C fingerprint than trees growing today.

This estimate does not include forest fires, which release carbon and increase in dry years.

Over large land areas though, there are no oceans to release carbon, so the fossil fuel effect is the most important.

In addition, the fierce solar heat released further carbon from its surface rocks.

If we carry on releasing stored carbon at our current (increasing) rate, it is likely to cost us the earth.

If they start releasing carbon, instead of storing it, this is what climate scientists call a "positive feedback".

In short: The use of peat fuel releases carbon that was bound long before the industrial revolution.