Protecting biocatalysts from oxygen

Certain enzymes from bacteria and algae can produce molecular hydrogen from protons and electrons—an energy carrier on which many hopes are riding. All they need for this purpose is light energy. The major obstacle to their ...

Why go back to the Moon?

On September 12, 1962, then US president John F. Kennedy informed the public of his plan to put a man on the Moon by the end of the decade.

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