And there is no shortage of theories to explain the insects' decline, Climate change, habitat destruction, a paralysing virus, fungal infection and even a plague of parasitic mites have all been proposed.

对昆虫（蜜蜂）数量下降的解释不乏各种理论，如气候变化、栖息地遭破坏、致瘫病毒、霉菌感染，甚至还有寄生螨虫肆虐。