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Issues and Investigations

The Ozone Layer Is On Track To Recover Within Decades As Harmful Chemicals Are Phased Out, Scientists Report

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In rare good news for the planet, Earth’s ozone layer is on track to recover completely within decades, as ozone-depleting chemicals are phased out across the world, according to a new United Nations-backed assessment. The ozone layer protects the planet from harmful ultraviolet rays. But since the late 1980s, scientists have sounded the ...

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New Alzheimer’s Drug Shows Promise In Slowing Disease But May Include Significant Risks, Study Shows

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An experimental Alzheimer’s drug modestly slowed the brain disease’s inevitable worsening, researchers reported — but it remains unclear how much difference that might make in people’s lives. Japanese drugmaker Eisai and its U.S. partner Biogen had announced earlier this fall that the drug lecanemab appeared to work, a badly needed bright spot after ...

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