Earth: Our Fragile Planet w/ Katherine Calvin and Sylvia Earle

<p>Earth: Our Fragile Planet w/ Katherine Calvin and Sylvia Earle</p> <p>Celebrating Earth Day with NASA Senior Climate Advisor Katherine Calvin and Sylvia Earle - Time Magazine’s first Hero for the Planet!</p> --- Send in a voice message: https://anchor.fm/the-cosmic-companion/message Support this podcast: <a href="https://anchor.fm/the-cosmic-companion/support" rel="payment">https://anchor.fm/the-cosmic-companion/support</a>