Wildlife numbers halved over past four decades: WWF
Wildlife numbers halved over past four decades: WWF

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.

`Lost world` discovered in remote Australia

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".

New `tree of life` created to study fish evolution

Fishes account for over half of vertebrate species but knowledge about relationships among its various types is still unknown.