How a moderate West Virginia Democrat could decide what Biden can do on climate change. Plus, the story of a snowstorm, six expiring vaccines and a group of dedicated health-care workers. 
Read more:
One coal state senator holds the key to Biden’s ambitious climate agenda — and it’s not Mitch McConnell. Climate and science writer Sarah Kaplan reports.
When Oregon health-care workers got stuck in a snowstorm with expiring vaccines, they got creative. Andrea Salcedo reports. 
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