Greg and List:
1. Thanks for the alert on this (free) study, that can be found at
http://www.earth-syst-dynam.net/4/237/2013/esd-4-237-2013.pdf
2. Those (like myself) interested in your "CROPS, biochar, etc", will
find plenty here on CDR, even though that term is here rep
"All the other techniques we know about just prevent emission, nothing else,"
said lead author Klaus Becker of the University of Hohenheim in Stuttgart,
Germany. "Only plants are able to extract carbon dioxide from the air."
Spoken like a true biologist. The problem with plants (unlike geochemic
