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As the leap year helps to keep us in sync with the sun, we turn our attention to the natural world. There is no simple solution to stop forces like climate change that are sending nature out of sync. We’re seeing flowers such as Japan’s famous cherry blossom blooming early because of warmer weather. Some pollinators are emerging only to find the plants they rely on have been and gone. But, within the natural world, there also incredible stories of animal synchrony that offer hope and that we could learn from. We meet the Cape Ground Squirrels who appear to be adapting to sweltering summers, fireflies who offer a model for understanding the relationships between objects and hear about a ‘perfect’ solar system in which all planets are in sync.

Plus, the underwater mountain range discovered in Chile, a listener asks a question about keeping time and we hear what you’ve been getting in touch about over the past week.