The world may run out of elephants. Poachers kill an estimated 40,000 of the big animals a year, even though trading in ivory has been essentially illegal for more than 20 years. But 150 years ago, ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. The best billiard balls once came ...

Add Yahoo as a preferred source to see more of our stories on Google. Billiard balls were once made of ivory. Building on earlier work by English inventor Alexander Parkes, Hyatt used photographic ...

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