While Americans may be enjoying less resource degradation at home (in cleaner air, water and soil), our consumption habits continue to wreak environmental havoc abroad.

At the same time, roads create environmental havoc, speeding soil erosion, clogging wetlands with debris and destroying streams.

War and environmental havoc have caused famine and infertility throughout the United States.

The main mechanism is thought to have been a global pall of dust that blotted out the sun, wreaking environmental havoc.

Then, when real-estate developers started building condos on those "two ugly mountains," he could make more hay out of the environmental havoc.

The apparent vulnerability of tankers to damage continues to wreak environmental havoc.

That may not seem like much, but it is enough to cause environmental havoc.

But he asserted that the environmental havoc wreaked by the destruction of Nepalese forests has done the most damage.

But it says environmental havoc is coming as well.

Wild pigs, prolific breeders, can double their population every four months, causing environmental havoc.