These changes have led to varying ecological harm to forests and natural species of wildlife that call Wyoming home.

Since the leaks, Statoil has stated that the oil has mostly dissolved, and there is not much proof of ecological harm.

Invasive organisms brought by extraterrestrial civilizations could cause great ecological harm because of the terrestrial biosphere's lack of defenses against them.

For instance, at one point he takes a page and a half to detail the ecological harm that shortsighted engineering has wreaked on the Everglades.

Mirex also caused even broader ecological harm that was often attributed to the fire ants.

But relative to the disputes over the amount of reserves and ecological harm, the politics reverberate loudly, forcing local elected officials to take a stance.

Experts say the move promises new understandings of the deep as well as new ways to save the oceans from ecological harm.

Although no serious ecological harm from the spraying has been documented, there have been some ominous developments.

Further research suggests that certain drugs may cause ecological harm.

So far, ecological harm by schoolroom butterflies to native fauna and flora is unproven.