Bumblebees' decline points to mass extinction – study

Populations disappearing in areas where temperatures are getting hotter, scientists say

Bumblebees are in drastic decline across Europe and North America owing to hotter and more frequent extremes in temperatures, scientists say.

A study suggests the likelihood of a bumblebee population surviving in any given place has declined by 30% in the course of a single human generation. The researchers say the rates of decline appear to be "consistent with a mass extinction".