But the scientists recognize many of the animals on sight.

Scientists recognized the greenhouse effect long ago, but the question was how much difference it would make.

For example, scientists recognized as early at 1910 that radiation caused skin cancer.

Until recently, scientists have recognized only three groups of hominids.

Early in the 19th century, scientists had already recognized that Earth has been inhabited by living creatures for a very long time.

"There's always a sense that artists and scientists don't recognize national borders," he said.

The elderly scientist turned and recognized the agony through which his serving girl was going.

The scientists, because of their commitment to objectivity above all else, cannot recognize the difference between these two categories.

That is a lot, the scientists recognize, in a country where the population pressure is so intense.

Scientists from all over the world studied and recognized a plenty of pseudogenes.