Most major US cities are underprepared for rising temperatures

This month, Denver, Las Vegas and Phoenix all posted record high temperatures. And across the nation, Americans are ramping up for a scorching summer. Yet despite more frequent and intense heat waves on the horizon, cities ...

China's segregated school system hinders migrants

When Eli Friedman set out to write his second book, he intended to focus on the segregated education system in China and how it affected teachers' work, but quickly found that the project moved in an unexpected direction.

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