At first scientists thought they were mollusks and scale insects (Duffield 1981).

So there are many such machines on the market - mostly aimed at engineers and scientists.

He nervously glanced at suited scientists, who were listening to his every word.

At present scientists talk of 1,000 years before the first evacuation space-ship can travel to Venus.

At first scientists thought it was a primitive skull with ape like teeth.

At first scientists used the microscope to view and draw objects not visible with the unaided eye.

At first scientists thought the disease must be genetic, a mutation passed from parent to child.

They traversed the corridor and glanced at intense scientists in white behind glass but rarely got any closer than that.

The other pair looked down a conference table at ten other physicians and scientists.

It is at this point that the project's enthusiasts and mainstream scientists part company.