[Pil-pc-oceania] Burying trees

[Pat]

There is an interesting article in the 3 May issue of New Scientist -  
'Carbon Lockdown.'

It contains several ideas about sequestering carbon, such as  
regenerating swamps, burying trees in large quantities, and, more  
promisingly, developing a variety of methods of pyrolysing (a fancy  
kind of composting) which would produce a certain amount of heat that  
could be utilised as well as some of the famous 'biochar' (think terra  
preta).

You will find quite a few hits if you google for terra preta, such as
http://terrapreta.bioenergylists.org/

Cheers,
Pat