Climate change See all topics Facebook Tweet Email Link Link Copied! Follow Moonshot proposals to save the planet’s ice sheets, including giant underwater sea curtains and refreezing Arctic ice , are gaining popularity as the planet heats up. But none of the most high-profile ideas are viable — worse, they may cause irreparable harm, according to a new study published Tuesday. The melting of the vast polar ice sheets has become a byword for climate change; these giant frozen landscapes hold

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