Now, for the first time, scientists are beginning to look at the future climate in the same way.

With the finding made public, scientists began to question it.

With our help and protection, scientists are now beginning to learn what's out there.

In mid-20th century, social scientists began to study how and why ideas spread from one person or culture to another.

Few social scientists have begun as yet to concern themselves with such questions.

Scientists began studying the issue of climate change in the late 1980s and early 1990s.

Scientists are beginning to learn how some of these transformations took place.

At the same time it was only then that scientists began to form an accurate picture of the disease.

But the scientists then began to take away water from the monkeys before they offered the choice.

Scientists began to study the body and treat its diseases.