All the while, scientist with a history observes from his study.

A scientist might observe something, and try to describe what it is doing.

The scientists also observed that most species suffered badly in the western part of the region.

And for the first time, scientists observed evidence of Lewy bodies.

Next, the scientists observed how Toxoplasma spread through a living animal.

Scientists may be observing the island from elsewhere or even affecting events with their minds.

Scientists have observed that some changes are already occurring.

Scientists have observed and documented a multitude of events where natural selection is in action.

Scientists have observed that management undercuts field inspectors who stand up for food safety against industry pressure.

If more is to be learned, scientists must observe a live, active giant squid, or capture one.