helium
The many uses for helium, but are we running out of it?
© American Chemical Society (A Britannica Publishing Partner)
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Encyclopædia Britannica, Inc.Repatriation is about more than museums taking stolen materials off display.
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Contunico © ZDF Studios GmbH, MainzArchaeologists uncover an early Christian cemetery at Paderborn Cathedral, Germany.
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Contunico © ZDF Studios GmbH, MainzAn underwater-archaeology expedition.
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© American Chemical Society (A Britannica Publishing Partner)Learn about carbon and how it forms the basis of life.