How did ancient people, such as the Hohokam(in Arizona) and the Nabateans (in the Negev, Jordan) – utilize/cultivate desert/arid land, and what can be learned from that on climatic change and the Earth systems?

In order to reverse desertification, and to make 33% of the land liveable.

It will be my pleasure to assist your scientists in this study.

Professor Ervin Yehuda Kedar

p.s. I mapped 2,000,000 dunams of ancient agriculture and wrote over 100 scientific articles in journals and a book (published 50 years ago).

Could it be possible to better understand biodiversity ?

Biodiversity is declining (in quantity and qualtity, i.e. fewer species and fewer individuals) for different reasons including over-use, over-harvesting, misunderstanding and direct destruction. The possible effects will concern at least agriculture (feeding human beings), health and the functioning of more natural ecosystems. It could be important to anticipate a little bit.