Bees are one of the busiest species on the planet. A single honeybee will typically visit around 7,000 flowers a day. It takes four million flower visits to produce a one kilogram of honey. The world observes Bee Day on May 20 to raise awareness about the importance of pollinators and how they contribute to our sustainable developments. Human activities, however, have been increasingly putting bees and other pollinators such as butterflies, bats and humming birds under threat.