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Can anyone help, please? in the 80's I read a SciFi in English, translated from French about a 'current' discovery of a 'perfect couple' in a spherical ship found buried in ice. The girl was revived and talked of an earlier Earth where man lived with nature and took 'energy' pills for food. Eventually the girl takes poison and is hurriedly returned to the ship and 'refrozen.' The ship is abandoned with the hope that some future generation can save them. It was a well-written full-length book that I would love to re-discover. Thank you in anticipation that one of you special people know the book.