Gimme shelter! The cell-like envelopes in which life on Earth arose and evolved may literally have dropped from the sky, a new study suggests.
Scientists exploring the origins of life have focused on two ingredients—proteins, the workhouse molecules that underlie life's activities, and DNA, the molecule that carries the blueprint for future generations. But to thrive, life as we know it requires something else: a container to protect the molecular machinery from the vagaries of the world around it.
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