As our world changes, so do the animal calls and natural rhythms that echo across the planet. Scientists are now tuning in to these subtle audible shifts, finding new ways to understand the impacts of the climate crisis—and what we can do to help. Listen to and explore the changing sounds: https://on.natgeo.com/3Kk2zNf For the curious, conscious, and committed explorer, this journey of discovery is only the beginning. #NatGeoSubscriberWeek | National Geographic