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In spring 2011 the National Academies of Sciences, Engineering, and Medicine produced a report outlining the next...... more
Understanding of protons and neutrons, or "nucleons"?the building blocks of atomic nuclei?has advanced dramatically...... more
Americans’ safety, productivity, comfort, and convenience depend on the reliable supply of electric power. The electric...... more
Space-based observations have transformed our understanding of Earth, its environment, the solar system and the...... more