Our laser technique can tell apart elephant and mammoth ivory

In recent years, the global trade in elephant ivory has faced significant restrictions in an effort to protect dwindling elephant populations. Many countries have stringent controls on the trade of elephant ivory. The sale of mammoth ivory, sourced primarily from long-extinct species, however, remains unregulated.

But it’s a significant challenge for customs and law enforcement agencies to distinguish between ivory from extinct mammoths and living elephants. This is a process that is both...