5-3

How long can we keep eating away at these terrestrial forms of the earth′s natural capital without threatening our economies and the long-term survival of our own and other species ? No one knows. But there are increasing signs that we need to come to grips with this issue.
This will require protecting the world′s remaining wild areas from development. In addition, many of the land areas we have degraded will need to be restored. However , such efforts to achieve a balance between exploitation and conservation are highly controversial because of the timber,mineral,and other resources found on or under many of the earths land areas.

我們還要多久再不威脅到我們的經濟和長期倖存的物種下，可以遠離食用陸地上形式的自然資源。沒有人知道，可是我們透過逐漸增加的徵兆，使我們需要去理解這個議題。
將需要保護這個世界發展後所剩下的未開發地區。除此之外，我們需要去恢復很多因為我們而變質的土地。然而努力完成開發和保護之間的平衡是具高度爭議性的，因為木材、、礦物和其他資源是在地上或地下被找到的。