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Birds are fascinating: when they fly, they embody freedom; their magnificent plumage displays nature's amazingly wide range of colors. F. N. Martinet first made ...
Throughout our history, we have transformed the raw produce of the earth into materials that satisfy our needs and desires - fibres for clothes, metals for ...
Are we alone in the Universe? Was there anything before the big bang? Are there other universes? What are sunspots? What is a shooting star ...
