1.   This is illustrated in a study of the melting of natural rubber samples, which has shown that the melting range is a function of the temperature of crystallization.

2.   Gates claims that its gumboots -- made from natural rubber -- are an altogether greener welly.

3.   Along with the increase in latex use, the number of people with an allergy to the natural rubber has dramatically risen.

4.   China Resources Development, a distributor of natural rubber, reported that its losses were growing.

5.   Natural rubber latex, derived from the sap of the rubber tree, contains proteins that can cause allergies.

6.   Shanghai Tyre lost money as natural rubber prices doubled and interest costs on its debt surged.

7.   The Axis powers controlled the majority of natural rubber plantations during World War II.

8.   The FDA says that for protecting intact skin, both natural rubber latex and non-latex gloves are effective.

9.   The U.S. Food and Drug Administration said it will require medical devices, including gloves, that have natural rubber latex to carry warning labels about potential allergic reactions.

10.   There was debate over the difference between natural rubber and synthetic rubber that is used in the voting machines.