desertification
persistent degradation of dryland ecosystems by human activities and climate change
last glacial maximum
the most geologic interval where ice sheet and glacial coverage on the earth peaked
Holocene climate optimum
a warm period that occurred during the first half of the Holocene epoch
grassroots
globalisation
integration of economies and cultures through global networks
regionalism
division of areas into regions
top-down solution
decisions are made by a central authority and little consultation is made with those affected
bottom-up solution
local people are consulted are create projects to suit their needs