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The city was slow to react, and the vaccine rollout was flawed. Poor neighborhoods still need help. But shutdowns and mandates saved lives.

The first two years of life are a time of astonishing brain growth. What has that meant for the toddlers who have only known a world with COVID?

Two years since Covid-19 appeared in the US, Columbia University experts have taken a deep dive into how it has changed our society.

With more hurricanes hitting the United States, and the potential for larger and nastier storms, experts say the risk for illness and death in their aftermath is increasing.