Either way, wars result in destruction and species extinction, not protection.

The reserve's small size and isolation from other natural areas also make species extinction a much greater risk.

As a result, species extinction could be accelerated by the impact oil drilling would have there.

Biologists tell us we have entered a period of catastrophic species extinction.

There is little dispute that we are in a period of mass species extinction caused by human activity.

These would have included the demise of a population locally or ultimately, species extinction.

The supercollider can wait, but population growth and species extinction need prompt attention.

Environmental concerns and threats of species extinctions move to center stage on prime time.

Our planet is currently experiencing a catastrophic rate of species extinction.

Already there are diverse religious groups addressing issues like species extinction and global warming.

Species extinction is not only due to habitat loss.

Hansen describes the situation with species extinction similarly to that of sea level rise.

But again, it sets up an international process for long-term management of the problem of species extinction.

Another speaker this year actually used the term "species extinction," referring to ours.

Yet the authors' aim is precisely in the opposite direction, to call into question this country's approach to the problem of species extinction.

Europe's economic travails made him think of species extinction.

Habitat loss is the leading cause of both species extinctions and ecosystem service decline.

However, Americans prioritize global warming over species extinction and acid rain issues.

Habitat destruction is currently ranked as the primary cause of species extinction worldwide.

Thus fragmentation of habitat is an important cause of species extinction.

In the rain forest, however, the gloom and doom of species extinction is far from Wilson's mind.

I cannot comment on the museums but the Earth is on the verge of a significant species extinction event.

Habitat degradation is currently the main anthropogenic cause of species extinctions.

- The current rate of species extinction signifies an unprecedented biodiversity crisis.

Species extinction is another threat to our forests.