1.   Are colds caused by cold temperature, mused researchers?

2.   Colds are caused when rhinovirus lodges high up in your nasopharynx.

3.   Explanations why people catch colds are almost as numerous as the viruses that cause colds.

4.   Far from causing colds, opening a window to air out the house can actually let germs escape.

5.   If your cold is caused by a virus, an antibiotic will not help.

6.   In fact, if your cold is caused by a virus, an antibiotic will not help.

7.   The chemical compounds in gingerroot, called sesquiterpenes, are active against rhinoviruses that cause most colds.

8.   Antibiotics, moreover, have no effect on the viruses that cause colds.

9.   But whether the drug will work on the many viruses known to cause colds has yet to be determined.

10.   One complication is that so many different bugs cause colds.