But meat would be limited, since cows rely on pollinated plants as a food source.The absence of honeybees could disrupt local ecosystems, posing a threat to the stability of multiple species, including fish.It takes 60% of the bee colonies in the US to pollinate California almonds, which make up around 80% of the global supply.The probiotic joins a growing list of products designed to save honeybees, including solar treatments that destroy pests and sensors that allow beekeepers to monitor their colonies. Efforts to rescue the world's hives could save us from a future without our most beloved and nutritious foods.