Small quantities of iron were smelted in ancient times, in the solid state, by heating the ore in a charcoal fire and welding the clumps together with a hammer and
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Individuals carrying the ailment may at first believe that they have a simple summer cold, but hay fever becomes more evident when the apparent cold does not disappear. These i
Among the possible solutions include a habitat module and a counterweight consisting of every other part of the spacecraft, alternatively two habitatable modules of similar weight could be attached to
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In china, the castaways’ loved ones showed up oat the reward challenge set to compete with them. An opportunity to wrestle back some independence appears with a shiny new van
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