Scientists uncovered the nutrients bees were missing – Colonies surged 15-fold (sciencedaily.com)

Researchers engineered yeast to produce six pollen sterols that honeybees typically lack when natural forage declines. In controlled lab trials, colonies fed the sterol-enriched supplement produced up to 15 times more young and continued brood rearing for the length of the study. The team says the precision-fermentation approach could become a scalable, nutritionally complete feed to support honeybee health and potentially ease competition for pollen for wild pollinators.