Have you ever wondered what corals, oak trees, and chickadees have in common? In today's episode, we explore the concept of phenology, or the scientific study of natural cycles. We talk about how the annual spawning event of Australia's Great Barrier Reef, pollen and allergy season in oak trees, and how a cute little bird with a funny name is experiencing a big problem. It's all in about timing! Visit the Speak Environment blog for links and downloads for all reference material used in today's episode: https://bit.ly/3Ja1NNY  All music is provided by Scott Holmes Music under a free Creatives Commons license: https://scottholmesmusic.com