1 - Any drug development effort to combat neurodegenerative disorders will have to examine carefully any possible side effects.

2 - X rays allow art historians to examine paintings internally without damaging them.

3 - The trend of increasing carbon dioxide in the atmosphere is documented by the examination of air bubbles trapped in glacial ice as well as by direct measurements of the atmosphere.

4 - After elucidating the mechanism of injury and history of subsequent events, the physical examination is the key to the assessing the severity of the injury.

5 - As the species which is most obviously shaping the future of planet Earth, humans need to examine the consequences of many current development strategies and urgently find solutions.