Today, 20 May, is World Bee Day. The aim of the day is to draw attention to the key role played by these industrious insects, which are being challenged by human activities and climate change. Indeed, bees, as well as other pollinators, like butterflies, bats and hummingbirds, are under threat from pesticides, land-use change and monoculture practices that reduce available nutrients. In addition to guaranteeing the survival of many plant species, these insects make a decisive contribution to global food security, thus ensuring the sustenance of our species: more than two thirds of the crops used for human nutrition are pollinated by bees.