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Elon Musk thinks humankind’s only safety valve is to move multitudes to Mars.

The garment sector, which employs 750,000 people, has been a crucial social safety valve, giving steady incomes to Cambodia's poorest.

Any CO2 pipelines in Kern County will be equipped with automatic safety valves, which are expected to limit leakage in the event of a rupture.

Last November, Sable sued Santa Barbara County for denying its permits to install automatic safety valves, a critical requirement for operations to begin.

“Netanyahu knows better than I do,” she said, “the best thing is to let it play as a safety valve – let people say, ‘we hate you, you are a murderer’.”