Other environmental leaders have excluded humans from their conception of the natural ecology.

In another exchange, an environmental leader urged the group's members to pull out because the demonstrations had turned violent.

Many European environmental leaders argue that Europe needs to press ahead.

Even Republican environmental leaders acknowledge that this might occur.

Environmentalists around our state would do well to consider where the next generation of environmental leaders is going to come from.

We are delighted to have the endorsement of such an important environmental leader.

The company is recognized as an environmental leader.

In the Southwest, some environmental leaders are more sympathetic to the concerns of rural communities.

Several environmental leaders said the court decision could persuade still other states to pass climate-change legislation.

Several of the most prominent black and Hispanic environmental leaders came as speakers.