Last Updated: Sunday, June 30, 2013, 14:52
Sumatran tigers - the tiger specie found only on the Indonesian island of Sumatra - is on the verge of extinction due to high levels of human activities, a new research has suggested.
Last Updated: Saturday, September 8, 2012, 12:57
Human-induced activities may be destabilising desert ecosystems across the world, a new study has claimed.
more videos >>
