Maybe the first life on Earth was part of an 'RNA world.' Artur Plawgo/Science Photo Library via Getty Images How life on Earth started has puzzled scientists for a long time. And it still does.
Kenneth Noll previously received funding from NSF, NASA, DOE and the Office of Naval Research. Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, ...
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