Wildlife numbers have plunged by more than half in just 40 years as Earth`s human population has nearly doubled, a survey of over 3,000 vertebrate species revealed on Tuesday.
An expedition to a remote part of northern Australia has uncovered three new vertebrate species isolated for millions of years, with scientists Monday calling the area a "lost world".
Fishes account for over half of vertebrate species but knowledge about relationships among its various types is still unknown.
Day in Pics: 23rd October
Showbiz World - October 23, 2014
Aamir Khan's sensational 'PK' posters