But once alone in the outside world, they are helpless - potential victims of the weather, accidents and human predators.

If whales are so intelligent, why haven't they learned to keep away from human predators?

But the environment today, crowded with human predators, presents challenges of a new sort.

But the challenge, he said, will be keeping them away from human predators.

If whales are so intelligent, why haven't they learned to keep out of the way of human predators?

One of which demanded that the human predators among us should be punished rather than rewarded.

In addition, there is the more dangerous human predator with whom we must also contend.

The money raised is then used to create a safe natural environment for the chimps, free from the threat of human predators.

The end was not far off, so human predators could do nothing to him that the cancer and the chemicals had not already tried.

There still are roving bands of human predators who show up every now and then.