China and India approve nasal COVID vaccines — are they a game changer? Nature - Scientists hope the immunizations, delivered through the nose or mouth, will prevent even mild cases of illness. Waltz, Emily nature

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These mucosal vaccines target thin mucous membranes that line the nose, mouth and lungs. By prompting immune responses where SARS-CoV-2 first enters the body, mucosal vaccines could, in theory, prevent even mild cases of illness and block transmission to other people — something COVID-19 shots have been unable to do. Vaccines that produce sterilizing immunity would be game changing for the pandemic. ...

The crisis in Jackson shows how climate change is threatening water supplies

The crisis that has hit Jackson, Miss., highlights the fragility of water systems across the country that will be increasingly vulnerable to the effects of climate change in the coming years. ...

Historic flooding and record droughts are already stressing water systems across the country, but as the threats to infrastructure posed by climate change intensify, experts warn that what happened in Jackson may be just the beginning.

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What Will Earth Look Like When These 6 Tipping Points Hit

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Americans may need yearly shots to protect against Covid-19 Americans may need to get a single Covid-19 vaccination every year, federal health officials said Tuesday, making clear that the country will be living with the coronavirus for the foreseeable future. Brenda Goodman, CNN CNN

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