Elephants 'die earlier in zoos'

What happen in the news ? Every Elephants will die earlier in zoo.
When did the story happen ? It happen in December 12 2008.
I think every Elephants will die in zoo , Because they don't have lot of space in the zoo so every Elephants just can
live in same place but Elephants can't not live in a place that was very small so I think they need to live more bigger.
http://news.bbc.co.uk/cbbcnews/hi/newsid_7770000/newsid_7778800/7778874.stm