In his opinion, the park should have been "free of all human interference".

The extinction does not seem to have been caused directly by human interference.

It's still hard to make a good case for dog evolution without some crucial moment of human interference.

By protecting the places where animals live, human interference is limited.

Primary causes of the decline include disease and human interference.

However, the species were most probably introduced through human interference, and not by natural means.

They learned that human interference is not always appropriate in close encounters of the wild kind.

Corporate Standards had been set to guard against human interference, not nature's.

Was he suggesting that there had been some human interference?

Looking at what we did to this earth, many people think that planets should be left without human interference.