'Sobering statistic:' One-fifth of pollinators in North America at extinction risk / How survivors spanned the globe after Earth's biggest mass extinction / 'Extinction level' cuts coming to NASA, report says / A.I. Is Prompting an Evolution, Not an Extinction, for Coders / UK rewilding efforts could fuel extinctions in other countries, study warns / Extinction threatens nearly a quarter of all freshwater species / 'The sixth great extinction is happening', conservation expert warns / Alarm call as world's trees slide towards extinction / Beloved tiny mammal could soon disappear from our gardens as 'extinction fears' soar / Study of global primate populations reveals predictors of extinction risk