The World Wide Fund for Nature and The Zoological Society of London have been studying and plotting animal populations since the 1970s. The report their findings in The Living Planet Report. The news is not good. Our wildlife populations worldwide have halved since 1970.
in less than two human generations, population sizes of vertebrate species have dropped by half
We may already have crossed “Planetary Boundaires” that could lead to abrupt or irreversible environmental changes
We fucked up a long time ago.