The world`s oceans are under greater threat than previously believed from a "deadly trio" of global warming, declining oxygen levels and acidification, an international study said on Thursday.
The world`s coral reefs may be wiped out within a single generation thanks to the ravages caused by ocean acidification, pollution and overfishing, says an Australian expert.
President Barack Obama's speech at Siri Fort auditorium
Day in Pics: 27th January
Showbiz World - January 27, 2015