3 unexplainable mysteries of life on Earth

Brian Resnick in Vox:

The defining feature of our world is life. For all we know, Earth is the only planet with life on it. Despite our age of environmental destruction, there’s life in every corner of the globe, under its water, nestled in the most extreme environments we can imagine. But why? How did life start on Earth? What was the series of events that led to birds, bugs, amoebas, you, and me? That’s the subject of Origins, a three-episode series from Unexplainable — Vox’s podcast that explores big mysteries, unanswered questions, and all the things we learn by diving into the unknown.

The quest of discovering the “how” of life on Earth is bigger than just filling in the missing chapters of the history book of our world. To search for the origins of life on Earth is to ask other big questions: How rare is it for life to form on any planet? How improbable is it for life to form on any planet, anywhere? We don’t have all the pieces of the story, but what we do know tells an origin story of epic scope that takes us on an adventure to the primordial days of our world.

More here.