As navigator, Lovell took with him a sextant to take star readings - in case the computers failed and they had to find their own way home.
Unlike subway tokens, these were not coin-shaped. The most common scheme was a
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The geology in this area of the North Sea is well-suited for CO2 storage, says Schovsbo. The rock has a large number of pores, or small cavities, that can hold the CO2.