Thorium: symbol Th, natural chemical element, solid, metal, radioactive, atomic number 90, actinoids family. Thorium can be used in nuclear power reactors - as precursor of 233U.
to own
Just call any local insurance agent and they can walk you through the process.
Rubber is made from Latex, which is obtained from the sap of the Rubber Tree.
Jons Jakob Berzelius (Sweden) in 1815.