Something that happens only rarely occurs ‘once in a blue moon’. ARC's Pool Frog Recovery Project Manager details why this celestial phenomenon is so crucial to the UK's rarest amphibian. Astronomically, there are two definitions of blue moon, but the most commonly used refer to the second of two full moons occurring in the same month. The next "seasonal" blue moon falls on the 19 August this year (2024). Traditionally some cultures have named full moons marking different times of the yea...
