ozone depletion

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Is the ozone depletion still a really big environmental problem? Are you still very afraid of what could happen in the future? With the Biosphere 1 and 2 and BIOS 3 experiments, surely many discoveries and learnings have been found which would help us cope with the present environmental problems. The experiments were relatively successful even if in the end they couldn't be sustained. Do you think the researches done could help find a solution to the problem of ozone depletion?