Conversion of natural habitats into agricultural and industrial landsc
apes, and ultimately into degraded land, is the major impact of humans
on the natural environment, posing a great threat to biodiversity. Th
e emerging discipline of restoration ecology provides a powerful suite
of tools for speeding the recovery of degraded lands. In doing so, re
storation ecology provides a crucial complement to the establishment o
f nature reserves as a way of increasing land for the preservation of
biodiversity. An integrated understanding of how human population grow
th and changes in agricultural practice interact with natural recovery
processes and restoration ecology provides some hope for the future o
f the environment.