LIVING underwater is about to become a lot easier. The US Navy has developed
a way to clear carbon dioxide from air using the most convenient substance
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“Removing CO2 is very important,” says Gareth Toft, a research
scientist with the Submarines Atmospheres Group at the British defence lab
Qinetiq—formerly the Defence Evaluation and Research Agency—in
Hampshire. “With levels over 5 per cent you’re in immediate trouble. At 10 per
cent it’s fatal.”
But at the moment, the chemicals used to remove exhaled carbon dioxide in
submarines and underwater habitats have to be replaced at frequent…
