amphibians

PARIS: The sixth mass extinction of life on Earth is unfolding more quickly than feared, scientists have warned. More than 30 percent of animals with a backbone -- fish, birds, amphibians, reptiles and mammals -- are declining in both range and population, according to the first comprehensive analysis of these trends. "This is the case of a biological annihilation occurring globally," said Stanford professor Rodolfo Dirzo, co-author of a study published on Monday in the peer-reviewed US journal, Proceedings of the…