Sign up for Big Think on Substack The most surprising and impactful new stories delivered to your inbox every week, for free. Defining exactly what we mean by “life” — in all its varied forms — has long been a formidable challenge. Physicist Erwin Schrödinger wrote a book titled What is Life?” in 1944. More than 80 years later, despite …
Read More »What exactly is “life?” Astrobiologists still have more questions than answers
