In particular, he made use of polarized light and studied optical rotation by various chemicals.

Once this new Bourne is in our hands we'll get the information we need one way or another -confirmed by chemicals, of course.

The animal hospital says more research is needed to find out if it'scaused by environment, diet, agricultural chemicals or something else.

Part of the good ozone layer is gone - destroyed by man-made chemicals.

His hair was longer now, bleached both by chemicals and by the sun.

They may also protect this water store from animals by spines and chemicals.

During the 20th Century, the river became heavily polluted by chemicals used in the production of textiles.

People, you can't lift diddly into space by burning chemicals.

The pollution of European water by pesticides and other chemicals is very serious.

Why are some people apparently made ill by everyday synthetic chemicals?