The human economy is now using many

The human economy is now using many critical resources and producing wastes at rates that are not sustainable. Sources are being depleted. Sinks are filling and, in some cases, overflowing. Most throughput streams [the use of sources relative to sustainable limits] cannot be maintained over the long term even at their current rates, much less increased. We expect many of them will reach their peaks and then decline in this century’ (p. 56).

The human economy is now using many critical resources and producing wastes at rates that are not sustainable. Sources are being depleted. Sinks are filling and, in some cases, overflowing. Most throughput streams [the use of sources relative to sustainable limits] can not be maintained over the long term even at their current rates, much less increased. We expect many of them will reach their peaks and then decline in this century '(p. 56).

The human economy is now using many critical resources and producing wastes at rates that are not sustainable. Sources. Are being depleted. Sinks are filling and in, some, cases overflowing. Most throughput streams [the use of sources relative. To sustainable limits] cannot be maintained over the long term even at their, current rates much less increased. We expect. Many of them will reach their peaks and then decline in this century "(P. 56).