Hacker News Reader

You'll have to account for driving water to the desert. Desert soil is fine (for desert-aware trees), but trees like water, and large trees like lots of water. In my country, Australia-native Eucalyptus is doing well.

http://www.kalanit.org.il/wp-content/uploads/2016/10/IMG_000...

View on HN

The Romans built aqueducts that spanned hundreds of miles and they did it thousands of years ago. Why do you assume that today water has to be 'driven' with trucks or something?

I'm sure we could build aqueducts.

Whatever you do, if the target is reducing CO2 emission, you'll have to account for the CO2 investment. All I am saying is it may be more cost-effective to leave the desert alone and put our Trillion trees where conditions are already great for large trees (Alaska, NZ), instead of pipe-dreaming about Roman aqueducts delivering water to a green Sahara or Gobi.

Reply on news.ycombinator.com