Biosignatures -- evidence that says or suggests that life has once been present -- are often very hard to find and interpret. Scientists examining fossilized life on Earth can generally reach some sort of agreement about what is before them, but what about the soft-bodied or even single-celled organisms that were the sum total of …
Continue reading "“Agnostic Biosignatures,” And The Path To Life As We Don’t Know It"
Many Worlds 