Other scientists are watching individual microbes evolve into entire ecosystems.

The scientist had watched the work of his servants with increasing interest.

The scientists are watching the damage to the corn roots.

Still, scientists can watch stress hammer away at the immune system in the laboratory.

Montana stood watching her expression the way a scientist might watch a lab experiment.

The remaining scientist watches them leave the facility on a security monitor.

The scientist watches as she slides into the thick black liquid.

But scientists are watching these clathrates carefully, because they could play a major role in future climate change.

The scientists and officials then watch helplessly as the two computers exchange information without limitation.

The evidence that they were there was first seen when scientists were watching the planet as it passed between the Earth and a star.