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The eruption of an underwater volcano off Tonga on Saturday

Tonga volcano eruption likely not large enough to affect global climate, experts say

By Rachel Ramirez and Brandon Miller, CNN Though massive volcanoes have the potential to affect global temperatures and weather, the eruption near Tonga on Saturday was likely not large enough to impact global climate, experts tell CNN. The Hunga-Tonga-Hunga-Ha’apai eruption on Saturday was enormous; likely the largest in 30 years, according to experts. It injected

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The US Centers for Disease Control and Prevention is set to update its mask advice to best reflect the available options and the different levels of protection they provide

It might be time to upgrade your mask

By Rob Picheta, CNN If you’re still wearing a cloth or surgical mask when you’re out and about, it’s time to rethink your face covering. The US Centers for Disease Control and Prevention (CDC) is set to update its mask advice this week to best reflect the available options and the different levels of protection

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Prime Minister Boris Johnson acknowledged the UK's National Health Service was on a "war footing" in a televised address

From Europe to the US, Covid cases in children are surging. Schools aren’t prepared

By Eliza Mackintosh, CNN As Covid-19 cases skyrocketed across Britain in late December, Stuart Guest spent his vacation poring over scientific reports about air cleaning and filtration systems. Guest, a head teacher at an elementary school in Birmingham, England, scoured Amazon for affordable air purifiers in the hopes of stopping the more transmissible Omicron variant

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