Bee losses followed World Wars
British historical records show century-long decline of pollinators
![graph on decline](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2014/12/bm_fig2_ollerton141212_new.png?fit=860%2C460&ssl=1)
DIE-OFF Extinctions of bees and some wasps in Britain zipped upward in the decades after the world wars, probably because of land use and agricultural changes.
J. Ollerton et al/Science 2014, adapted by E. Otwell