Plastic that was made to protect the environment at first

(1)John Wesley Hyatt Billiard Ball 1868 Smithsonian
(2)Billiards balls are corny and ivory
(3)I made it

(1)If you catch an elephant
(2)There are 8 billiard balls

(1)in Mozart’s time
(2)the white keys on the piano

(1)Ivory lives

(1)If you catch an elephant
(2)I’m going to make a few pianos

(1)I’m going to make them go extinct

(1)So the elephant almost went extinct

(1)From the perspective of billiards industry

(1)So, the owners association in the U.S

(1)replaceable for ivory
(2)When you develop a material

(1)I’m going to give you a big prize
(2)I’m betting on a bounty

(1)With cellulose
(2)I added nitric acid

(1)nitrocellulose-based
(2)I make celluloid

(1)The celluloid
(2)as far as we know

(1)the first plastic

(1)John Wesley Hyatt Billiard Ball 1868 Smithsonian
(2)In a way, plastic

(1)John Wesley Hyatt Billiard Ball 1868 Smithsonian
(2)From what we can see

(1)John Wesley Hyatt Billiard Ball 1868 Smithsonian
(2)It’s very pollutant

(1)John Wesley Hyatt Billiard Ball 1868 Smithsonian
(2)But at the time
(3)In order to protect the natural environment

(1)To prevent the extinction of elephants
(2)It’s made of plastic

(1)a piano white keyboard and billiard ball made from elephant ivory
(2)The substitute that I made because I thought elephants would go extinct
(3)the first plastic