Warming Trends: Tracking Bird Migration in the Night Sky, Plus the Olympic Mountains’ Rapidly Shrinking Glaciers and a Podcast Focused on Florida’s Polluted Environment » Warming Trends: Tracking Bird Migration in the Night Sky, Plus

A flock of birds flies over the border between Eagle Pass, Texas, and Piedras Negras, Coahuila state, Mexico, on Feb. 16, 2019. Credit: Julio Cesar Aguilar/AFP via Getty Images

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