Sumatran rhino 'hanging on by a thread'
By Helen Briggs BBC News
15 December 2017
Scientists have decoded the genome of the Sumatran rhinoceros - one of the most threatened mammals on Earth.
Its genetic blueprint shows that populations have been in decline for a very long time.
The rhino's troubles began during the last Ice Age, when its habitat shrunk, says a US team.
http://www.bbc.com/news/science-environment-42352256
